What are the keywords in the following sentence? athlete was also forced off the pitch when he sustained an injury in the second half
athlete, injury, pitch

What are the keywords in the following sentence? fans even camped for days when brand put computer on sale .
computer, day, sale

What are the keywords in the following sentence? a map detailing the route along a city
city, detail, map

What are the keywords in the following sentence? pull battery out of the laptop .
battery, laptop, pull