What are the keywords in the following sentence? master bedroom with windows leading on to the patio
lead, patio, window

What are the keywords in the following sentence? rear view of pilots flying a helicopter on sunny day .
fly, helicopter, pilot, view

What are the keywords in the following sentence? the crowd celebrates the arrival of politician and leaders after release
celebrate, crowd, leader

What are the keywords in the following sentence? Trains pulling into the trains station on an overcast day
day, pull, station