In this task, you are given a sentence which contains a motion and your task is to identify the physical entities involved in the motion. The input sentence can have more than one entity and also there is at least one entity that takes part in physical motion. There are two types of entities which are animate (beings that are alive) and inanimate entities (beings that are not alive).

Example Input:  The woman does sit ups.
Example Output: woman

Example Input:  The referee lets them know when to start and the sumos wrestle while the referee walks around the ring and monitors them.
Example Output: the sumos

Example Input: He held out his arms, and his son threw himself on his breast and imprinted a long, fervent kiss upon his lips.
Example Output:
son