What are the keywords in the following sentence? passengers alight from a train
alight, passenger, train

What are the keywords in the following sentence? model and guest arriving at the event
event, guest, model

What are the keywords in the following sentence? converted dining table into a desk
desk, dine, table

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