What are the keywords in the following sentence? An airplane with smoke coming out is in the sky.
airplane, come, sky

What are the keywords in the following sentence? summer forest with huge tree what grows on the rock
forest, grow, rock, tree

What are the keywords in the following sentence? hairstyles of the golden hair for summer
hair, hairstyle, summer

What are the keywords in the following sentence? a heart with lovers initials carved in the bark of the trunk of a tree
carve, initial, tree, trunk