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: gravel 
 Entity 2: tin

SOLUTION: yes

PROBLEM: Entity 1: body 
 Entity 2: nonprotein nitrogen

SOLUTION: no

PROBLEM: Entity 1: bear 
 Entity 2: or fur

SOLUTION:
yes