Q: "A man prepares his stand up grill with a large flame." Does this mean that "The man lights up his grill."?
A: yes

Q: "A black and white dog is running with a muzzle." Does this mean that "The muzzled white and black dog ran by."?
A: yes

Q: "A man in a blue sweater and baseball cap is working with wood." Does this mean that "There is a man in a blue sweater and New York Yankees baseball cap."?
A: it is not possible to tell

Q: "two dogs, one with long brown fur, both dogs have their mouths open and teeth showing, one dogs tongue is hanging out." Does this mean that "Two dogs, who are brothers, sit with their mouths open, ready for food."?
A:
it is not possible to tell