Input: Identify the most salient words:

organism perched on a rock

Output: organism
perch
rock

Input: Identify the most salient words:

flying through bouquets of flowers that are in the shape of hearts

Output: bouquet
flower
heart

Input: Identify the most salient words:

student gathered around a laptop

Output: gather
laptop
student

Input: Identify the most salient words:

a rainbow appears over the mountains after a storm passed through the park

Output:
appear
mountain
rainbow