What are the keywords in the following sentence? tanks roll through russian federal city after the abortive coup that marked the end
city, end, mark

What are the keywords in the following sentence? a guide to growing long hair
grow, guide, hair

What are the keywords in the following sentence? a soldier says goodbye to his girls before he deploys overseas in july .
goodbye, say, soldier

What are the keywords in the following sentence? passengers boarding a flight in the rain
board, flight, passenger