Q: "5 people are jumping holding hands in front of a park." Does this mean that "The people are good friends."?
A: it is not possible to tell

Q: "A large group of young people are enjoying themselves at a club, they appear to be dancing." Does this mean that "People are out dancing at a club."?
A: yes

Q: "Two dogs try to reach each other as their human companions pull them in opposite directions by their leashes." Does this mean that "The two dogs are trying to get acquainted with one another."?
A: it is not possible to tell

Q: "A man is fixing a net in front of a big stone staircase." Does this mean that "A person is fixing a net in front of a big stone staircase."?
A:
yes