Input: Identify the most salient words:

an abstract painting made by pouring layers of thin paint onto a surface

Output: layer
paint
painting

Input: Identify the most salient words:

an airplane parked on the tarmac at airport

Output: airport
park
tarmac

Input: Identify the most salient words:

troops of the advance behind the tank while attacking positions .

Output: position
tank
troop

Input: Identify the most salient words:

the sunken garden is in full bloom in the spring

Output:
bloom
garden
sink
spring