fictionalHalfSibling

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: fictionalHalfSibling

Indicates that one entity is considered a half-sibling of another within a fictional or narrative context, sharing one parent in the story’s canon.