Q: "A man and three children riding a bike with four seats." Does this mean that "The man is pedaling the bike."?
A: yes

Q: "A man jumps into the water on a sunny day." Does this mean that "The man is outside."?
A: yes

Q: "A man with an orange vest next to a train works with a handheld device." Does this mean that "A construction worker is working on the tracks next to a train."?
A: it is not possible to tell

Q: "The children are playing in the water." Does this mean that "Children are playing Marco Polo in the swimming pool."?
A:
it is not possible to tell