What are the keywords in the following sentence? a city is in award category as the worlds largest covering square meters or acres .
category, city, world

What are the keywords in the following sentence? an aircraft takes off at the airport .
aircraft, airport, take

What are the keywords in the following sentence? mountains and forests on a beautiful summer day .
day, forest, mountain

What are the keywords in the following sentence? i love this colour in his hair
colour, hair, love