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.

someo is a village and former municipality of the district of vallemaggia in the canton of ticino in switzerland.
someo

escape velocity is the initial speed that something would need to completely escape the gravity of a large body, like a star or a planet (such as the earth), by mere inertia.
escape velocity

champfleur is a commune.

champfleur

