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: earth 's mantle 
 Entity 2: nerve
Example Output: no

Example Input: Entity 1: tree 
 Entity 2: tumor
Example Output: no

Example Input: Entity 1: stomach 
 Entity 2: surface
Example Output:
yes