Several people are gathered in a room with a bulletin board and small television .
The people are scuba diving .
Several people are gathered in a room with a bulletin board and small television.
The people are scuba diving.
Sentence 1 describes several people in a room.  Sentence 2 describes people scuba diving.  These are 2 different actions in 2 different locations.
Sentence 1 describes several people in a room . Sentence 2 describes people scuba diving . These are 2 different actions in 2 different locations .