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: A man is sitting down on the ground fixing a child's bike.
Example Output: man

Example Input: A cry of terror broke from Dorian Gray's lips, and he rushed between the painter and the screen.
Example Output: he

Example Input: The Navajos rode wiry, wild-looking mustangs and drove ponies and burros carrying packs, most of which consisted of deer-hides.
Example Output:
Navajos