What are the keywords in the following sentence? devotees worshiping deity on the occasion of festival at a temple .
deity, devotee, festival, occasion, temple

What are the keywords in the following sentence? An elephant is laying down in a zoo.
elephant, lay, zoo

What are the keywords in the following sentence? people wait for politician to speak at a campaign event on the tarmac of the airport .
airport, event, wait

What are the keywords in the following sentence? visiting national park in a weekend
park, visit, weekend