What are the keywords in the following sentence? the extra aerobatic aircraft of the blades in formation over the sea
aircraft, formation, sea

What are the keywords in the following sentence? comedian lived and died at home while surrounded by his children and wife
comedian, home, wife

What are the keywords in the following sentence? single parent and her sons having a picnic in the park
parent, park, picnic, son

What are the keywords in the following sentence? A zebra wagging its tail as it eats some grass on the ground.
eat, grass, tail, wag, zebra