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).

He then takes a box with a new chain in it and puts it back on the bike and begins tightening the chain.
He

A close up of a wooden bench is seen followed by a person mixing ingredients together.
person

  The man stirs the drinks and after they taste the drinks they have made.

man