dominantGalaxy

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: dominantGalaxy

Indicates that one galaxy exerts a dominant influence or control over another galaxy, such as through gravitational effects or hierarchical structure within a system.