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.

[EX Q]: elisabeth charlotte of the palatinate, daughter of france by marriage (27 may 1652 - 8 december 1722) was a german princess and the wife of philippe of france, duke of orleans, younger brother of louis xiv.
[EX A]: elisabeth charlotte of the palatinate

[EX Q]: pierce the veil is an post hardcore group formed in san diego, california in 2007.
[EX A]: pierce the veil

[EX Q]: the pasig river is a river that passes through the capital of the philippines, manila.
[EX A]:
pasig river