Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

rsgc1 is a massive young open star cluster in the milky way galaxy.
rsgc1

anton buttigieg, kuom ( ]; 19 february 1912 – 5 may 1983) was a maltese politician.
anton buttigieg

airline food is food served to passengers on an airplane.

airline food