Opal
E429019
Opal is a contactless smartcard-based public transport ticketing system used across New South Wales, Australia.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Opal canonical | 32 |
How this entity was disambiguated
This entity first appeared as the object of triple T4310350 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Opal Context triple: [Maitland railway station, hasFareSystem, Opal]
-
A.
Opal
Opal is a precious gemstone renowned for its vibrant play-of-color and is especially associated with major deposits in Australia.
-
B.
Sapphire
Sapphire is an American author best known for her novel "Push," which was adapted into the acclaimed film "Precious."
-
C.
Beryl
Beryl is a given name that can be used for people of any gender, historically more common as a female name in English-speaking countries.
-
D.
Amber
Amber is a historic town near Jaipur in Rajasthan, India, renowned for its hilltop Amber Fort and rich Rajput architectural heritage.
-
E.
Amber
Amber is a character from the film "Green Room," a tense horror-thriller about a punk band trapped in a remote venue controlled by violent neo-Nazis.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Opal Target entity description: Opal is a contactless smartcard-based public transport ticketing system used across New South Wales, Australia.
-
A.
Opal
Opal is a precious gemstone renowned for its vibrant play-of-color and is especially associated with major deposits in Australia.
-
B.
Sapphire
Sapphire is an American author best known for her novel "Push," which was adapted into the acclaimed film "Precious."
-
C.
Beryl
Beryl is a given name that can be used for people of any gender, historically more common as a female name in English-speaking countries.
-
D.
Amber
Amber is a historic town near Jaipur in Rajasthan, India, renowned for its hilltop Amber Fort and rich Rajput architectural heritage.
-
E.
Amber
Amber is a character from the film "Green Room," a tense horror-thriller about a punk band trapped in a remote venue controlled by violent neo-Nazis.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
contactless smartcard-based public transport ticketing system
ⓘ
smartcard ⓘ |
| cardType |
Adult Opal card
ⓘ
Child/Youth Opal card ⓘ
linked to:
Opal card
Concession Opal card ⓘ
linked to:
Opal card
Opal single trip ticket ⓘ Opal visitor card ⓘ
linked to:
Opal card
School Opal card ⓘ Senior/Pensioner Opal card ⓘ |
| country | Australia ⓘ |
| fareStructure |
distance-based fares
ⓘ
time-based transfer rules ⓘ |
| feature |
automatic top-up
ⓘ
balance protection on lost or stolen cards ⓘ card registration ⓘ daily fare caps ⓘ off-peak discounts ⓘ online account management ⓘ stored value (prepaid balance) ⓘ weekly fare caps ⓘ |
| hasComponent |
Opal Travel mobile app
ⓘ
Opal card readers ⓘ Opal ticket machines ⓘ online customer portal ⓘ |
| introducedBy | Transport for NSW ⓘ |
| launched | 2012 ⓘ |
| operatingArea |
New South Wales
ⓘ
Sydney ⓘ |
| operator | Transport for NSW ⓘ |
| paymentMethod |
Opal card
ⓘ
contactless credit card ⓘ contactless debit card ⓘ mobile wallet payment ⓘ |
| publicRolloutCompleted | 2014 ⓘ |
| region |
Blue Mountains
ⓘ
Central Coast ⓘ Greater Sydney ⓘ
linked to:
Greater Sydney region
Illawarra ⓘ Newcastle ⓘ |
| replaced |
MyZone paper tickets
ⓘ
magnetic stripe tickets in New South Wales ⓘ |
| supportsModeOfTransport |
bus
ⓘ
ferry ⓘ light rail ⓘ metro ⓘ train ⓘ |
| technology |
contactless smartcard
ⓘ
near-field communication ⓘ |
| usedFor |
public transport fare collection
ⓘ
ticketing ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Opal Description of subject: Opal is a contactless smartcard-based public transport ticketing system used across New South Wales, Australia.
Referenced by (32)
Full triples — surface form annotated when it differs from this entity's canonical label.