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: earth 's mantle 
 Entity 2: nerve

SOLUTION: no

PROBLEM: Entity 1: cheek 
 Entity 2: mucus

SOLUTION: no

PROBLEM: Entity 1: tail 
 Entity 2: pigment

SOLUTION:
no