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: pill bug 
 Entity 2: body

SOLUTION: yes

PROBLEM: Entity 1: solution 
 Entity 2: electron

SOLUTION: yes

PROBLEM: Entity 1: salivary gland 
 Entity 2: methane

SOLUTION:
no