seriesRegularSeasons

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: seriesRegularSeasons

Indicates the seasons of a series during which an entity (such as an actor or character) is a regular, ongoing part of the main cast.