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: anxiety 
 Entity 2: neurotransmitter

SOLUTION: yes

PROBLEM: Entity 1: vertebrae 
 Entity 2: mast cell

SOLUTION: yes

PROBLEM: Entity 1: papaya 
 Entity 2: calcium

SOLUTION:
no