human: <image>
What are the people playing?
Answer the question using a single word or phrase.

gpt: tennis

human: Is the person, in black, serving?

gpt: yes

human: Has the ball been served?

gpt: no

human: How many people in this photo?

gpt: 2

human: How many people are playing tennis?

gpt: 2

human: What sport is this?

gpt: tennis