Input: Identify the most salient words:

red color burst with free space for text in the middle .

Output: burst
color
space

Input: Identify the most salient words:

planet earth and moon in the universe surrounded with plenty of stars

Output: earth
star
surround

Input: Identify the most salient words:

tourist travelling in a boat

Output: boat
tourist
travel

Input: Identify the most salient words:

large tree with the roots in the air and light coming through its trunk .

Output:
come
tree
trunk