Input: Identify the most salient words:

a helicopter flies over the golden gate bridge

Output: bridge
fly
helicopter

Input: Identify the most salient words:

colorful balloons flying over the mountain in sunrise time

Output: balloon
fly
time

Input: Identify the most salient words:

tourist attraction and road are pedestrianised for the day

Output: attraction
day
road

Input: Identify the most salient words:

many tourists walk around roman catholic place of worship

Output:
place
tourist
walk
worship