Q: "An artist is drawing a portrait." Does this mean that "A man is sketching."?
A: it is not possible to tell

Q: "Two women, who are both wearing head coverings, are at the check out stand in a store." Does this mean that "Two women with head coverings, checking out in a store."?
A: yes

Q: "A person riding a bike is in mid-jump in a forest." Does this mean that "A person riding a bike."?
A: yes

Q: "A girl gets caught in the rain." Does this mean that "A girl is standing in the rain with no umbrella and no rain boots."?
A:
it is not possible to tell