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: lid 
 Entity 2: brain

SOLUTION: no

PROBLEM: Entity 1: table salt 
 Entity 2: chlorine

SOLUTION: yes

PROBLEM: Entity 1: membrane protein 
 Entity 2: phospholipid bilayer

SOLUTION:
yes