What are the keywords in the following sentence? balloon floats over the streets during event
balloon, event, float, street

What are the keywords in the following sentence? A wok filled with broccoli and chicken.
broccoli, chicken, wok

What are the keywords in the following sentence? a flock of taking flight
flight, flock, take

What are the keywords in the following sentence? explore the moon and mars in search engine website
explore, moon, website