What are the keywords in the following sentence? Three big rigs parked in a row in a field.
field, park, row

What are the keywords in the following sentence? what the northern lights could look like above a city
city, light, look

What are the keywords in the following sentence? A skydiver with his parachute not deployed is falling from the sky.
fall, parachute, skydiver

What are the keywords in the following sentence? the small buds will open out into pinkish red flowers
bud, flower, open