Q: "Woman holds a infant with both hands." Does this mean that "There are two humans, one of which is a baby."?
A: yes

Q: "Balding man with a beard who has fallen asleep leaning on another man next to him, against the rails of a set of stairs." Does this mean that "A tired man naps on his son's shoulder."?
A: it is not possible to tell

Q: "A man in a wetsuit is suspended from a para-surfing harness whilst moving across the water on a board." Does this mean that "The man is teaching others how to para-surf."?
A: it is not possible to tell

Q: "There are many people sitting in a dimly lit room talking." Does this mean that "They are all alone."?
A:
no