TASK DEFINITION: Given two entities as input, classify as "yes" if second entity is the part of the first entity. Otherwise classify them as "no". These are entities of meronym In linguistics, meronymy is a semantic relation between a meronym denoting a part and a holonym denoting a whole. In simpler terms, a meronym (i.e., second entity) is in a part-of relationship with its holonym (i.e., first entity).
PROBLEM: Entity 1: beaver 
 Entity 2: chest

SOLUTION: yes

PROBLEM: Entity 1: koala 
 Entity 2: claws

SOLUTION: yes

PROBLEM: Entity 1: vertebrate retina 
 Entity 2: cell

SOLUTION:
yes