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).

Example Input: Entity 1: tracheal system 
 Entity 2: spiracle
Example Output: yes

Example Input: Entity 1: razor clam 
 Entity 2: molecule
Example Output: no

Example Input: Entity 1: food 
 Entity 2: essential fatty acid
Example Output:
yes