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: sea bed 
 Entity 2: tube foot

SOLUTION: yes

PROBLEM: Entity 1: hip bone 
 Entity 2: bone marrow

SOLUTION: yes

PROBLEM: Entity 1: opening 
 Entity 2: skin

SOLUTION:
yes