Q: "a child girl wearing coat" Does this mean that "A little girl in a coat."?
A: yes

Q: "Children in a classroom are lined up with their hands on each other's backs, forming a train." Does this mean that "There children are in line."?
A: yes

Q: "A little girl with pink pants sits on a man's shoulders." Does this mean that "A girl is trying to see the performance by sitting on her dad's shoulders."?
A: it is not possible to tell

Q: "A lone man sitting on rocks and fishing." Does this mean that "A man is fishing for trout."?
A:
it is not possible to tell