purchaseMethod

Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'

Predicate: purchaseMethod

Indicates the way or channel through which a purchase is made (e.g., online, in-store, by phone, or via a specific payment or ordering method).