railNetworkSide

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: railNetworkSide

Indicates on which side of a rail network (e.g., left or right relative to a reference direction) an entity is located or associated.