What are the keywords in the following sentence? the apartments are part of one of exciting new developments
apartment, development, part

What are the keywords in the following sentence? damage caused during the civil war to historic buildings
building, cause, damage

What are the keywords in the following sentence? a city provides critical habitat for threatened species such as polar bears .
city, habitat, provide

What are the keywords in the following sentence? A plane parked at an airport loading passengers
park, passenger, plane