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).

Input: Consider Input: Entity 1: nitrogen 
 Entity 2: covalent molecule

Output: yes


Input: Consider Input: Entity 1: body 
 Entity 2: vein

Output: yes


Input: Consider Input: Entity 1: subunit 
 Entity 2: nerve center


Output: no