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: animal tissue 
 Entity 2: tissue

SOLUTION: yes

PROBLEM: Entity 1: solution 
 Entity 2: electron

SOLUTION: yes

PROBLEM: Entity 1: perennial plant 
 Entity 2: trunk

SOLUTION:
yes