seriesRegularIn

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: seriesRegularIn

Indicates that an entity serves as a regular, recurring participant (such as a main or core cast member) in a particular series.