Q: "A man wearing a black jacket is talking on a cellphone as he walks down a street." Does this mean that "A man talks into a phone."?
A: yes

Q: "Many people are crowded together, with a couple of them looking upwards." Does this mean that "Some of the people thought they saw a UFO."?
A: it is not possible to tell

Q: "A person's image performing a yoga pose while looking at the sunset over the water." Does this mean that "The person is a woman."?
A: it is not possible to tell

Q: "Two children walking up an enormous staircase." Does this mean that "The children are walking"?
A:
it is not possible to tell