TASK DEFINITION: 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).
PROBLEM: The train did not proceed rapidly; counting the stoppages, it did not run more than twenty miles an hour, which was a sufficient speed, however, to enable it to reach Omaha within its designated time.

SOLUTION: train

PROBLEM:  The men look back and laugh with one another while still playing.

SOLUTION: men

PROBLEM:  The individual sets aside the shovel and walks towards the camera.

SOLUTION:
The individual