Q: "A man is in a park using his mobile phone." Does this mean that "A man talking to his wife on the phone."?
A: it is not possible to tell

Q: "A woman engaged in painting with a roller." Does this mean that "The paint is being applied by they lady."?
A: it is not possible to tell

Q: "Small child playing on playground equipment." Does this mean that "A small child plays."?
A: yes

Q: "A young hispanic-looking boy sitting backwards on a donkey." Does this mean that "A girl is riding a horse."?
A:
no