Q: "A man practicing karate moves in the air." Does this mean that "The man is moving around."?
A: yes

Q: "People on the beach look up to the sky to see a large heart written in the air by the contrail of a plane." Does this mean that "A plane is drawing a heart in the sky."?
A: yes

Q: "A man in a red plaid kilt stands outside holding a bag." Does this mean that "The man is Scottish."?
A: it is not possible to tell

Q: "A person is jumping while riding a bike." Does this mean that "Someone is putting their bike away."?
A:
no