What are the keywords in the following sentence? A black bear walking around in a grassy yard.
bear, walk, yard

What are the keywords in the following sentence? A counter looks out over a tarmac with a white airplane on it.
airplane, look, tarmac

What are the keywords in the following sentence? Airplane parked at an airport in the city.
airplane, airport, city, park

What are the keywords in the following sentence? bridal bouquet and rings on the table
bouquet, ring, table