Q: "A man sits on the side of his boat while fumbling with a knot in his fishing net." Does this mean that "A man is out on the water."?
A: yes

Q: "Two women compete in a hurdle event." Does this mean that "These women are professional athletes"?
A: it is not possible to tell

Q: "A person is walking through an italian airport pulling their luggage along." Does this mean that "The person is alone."?
A: it is not possible to tell

Q: "A girl in a pink jacket is walking through a large puddle." Does this mean that "girl attempts to walk on water"?
A:
it is not possible to tell