What are the keywords in the following sentence? the massive fire sent plumes of black smoke across nearby homes .
home, plume, smoke

What are the keywords in the following sentence? protected site is a ruin located in the small town of a city
locate, ruin, town

What are the keywords in the following sentence? these forests are warm in the summer and cold in winter
forest, summer, winter

What are the keywords in the following sentence? dentist makes procedures and treat teeth for a beautiful patient woman in dental clinic .
dentist, tooth, treat