cabinClassHierarchy

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: cabinClassHierarchy

Indicates a hierarchical relationship between cabin classes, where one cabin class is ranked above or below another in terms of priority, service level, or status.