firstMajorAnimatedSeries

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: firstMajorAnimatedSeries

Indicates that the subject is the earliest major animated television series in which the object (typically a person or character) was prominently involved.