What are the keywords in the following sentence? small aircraft that made emergency landing is transported toward the airport .
aircraft, airport, landing

What are the keywords in the following sentence? group of shiny electric guitars hanging on a wall and for sale .
guitar, hang, sale

What are the keywords in the following sentence? a banner hangs on the campus
banner, campus, hang

What are the keywords in the following sentence? a caucasian boy hidden behind a globe reveals only the eyes and part of the face
eye, face, hide, part, reveal