This is the 11246th most frequent German word.
sinan
The word "sinan" is not German; it may be a proper noun or belong to another language.
In this sentence, 'Sinan' is used as a proper noun referring to a person, specifically someone named Sinan.
Sinan ist ein begabter Musiker.
Sinan is a talented musician.
Here, 'Sinan' functions as the subject of the sentence, indicating the person performing the action of losing something.
Sinan hat seinen Schlüssel verloren.
Sinan lost his key.
In this example, 'Sinan' acts as the object of the action within the sentence, indicating who was met.