What are the keywords in the following sentence? we waited whe the bridge lifted to let a tall boat go through
bridge, lift, wait

What are the keywords in the following sentence? canopy of pink cherry blossoms in the park up from the stairway at station
blossom, canopy, park

What are the keywords in the following sentence? a helicopter flies south as planes and helicopters attack a fire approaching
fly, helicopter, plane

What are the keywords in the following sentence? A young man moving his eyebrows in a waving motion.
eyebrow, motion, move