What are the keywords in the following sentence? film director walks the red carpet at festival
carpet, director, festival, walk

What are the keywords in the following sentence? tourist attraction with crowd of people queuing outside the entrance
attraction, crowd, queue

What are the keywords in the following sentence? politician told a crowd about the time she used to intern for politician
politician, tell, time

What are the keywords in the following sentence? earth and moon from space .
earth, moon, space