hasCirculatorySystem

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: hasCirculatorySystem

Indicates that an entity possesses a circulatory system, i.e., an internal network for transporting blood or equivalent fluids throughout its body.