What are the keywords in the following sentence? flowers are still blooming on the first day of summer
day, flower, summer

What are the keywords in the following sentence? A tray with plates containing slices of pizza
pizza, plate, slice, tray

What are the keywords in the following sentence? The old airplane is parked in a field.
airplane, field, park

What are the keywords in the following sentence? insects fly near a white flower .
flower, fly, insect