Q: "An unhappy looking child lays in the grass at a park." Does this mean that "A child is sad."?
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

Q: "Lady waiting at the train station." Does this mean that "a young lady at the train station"?
A: it is not possible to tell

Q: "A man wearing black shirt and shorts playing guitar on a sidewalk while another man is sitting on the ground looking in the opposite direction." Does this mean that "A man is playing guitar for the other man."?
A:
it is not possible to tell