What are the keywords in the following sentence? elderly man recovering in his hospital bed with his elderly wife next to him after a serious operation
bed, operation, recover

What are the keywords in the following sentence? morning along a city looking north uptown .
city, look, morning

What are the keywords in the following sentence? The kitten was sleeping on the desk behind the keyboard.
desk, keyboard, sleep

What are the keywords in the following sentence? mosquitoes feed on the blood of humans and animals and can transmit deadly diseases
animal, disease, human, transmit