Learn Turkish: Öğrencilerin hepsi fakültenin toplantı salonunda bekledi. - All of the students waited in the faculty's meeting hall.

It combines three nouns to say "the faculty's meeting hall". First, we make the two-word indefinite compound toplantı salonu (meeting hall). Then, we link it to a specific faculty by adding the genitive suffix -nin to fakülte. The resulting chain is fakültenin toplantı salonu. Finally, we add the locative suffix -nda to say "in" that hall.

Is öğrencilerin hepsi also a noun compound?

Yes! In Turkish, quantity words like hepsi (all) or bazıları (some) function as nouns. To say "all of the students", you form a standard definite noun compound. The first word öğrenciler takes the genitive case suffix -in, and the root hep takes the possessive suffix -si.

Since "all of the students" is plural, why is the verb bekledi singular instead of beklediler?

When a subject refers to people and is plural, adding the plural suffix -ler to the verb is actually optional. Because the subject öğrencilerin hepsi already makes it perfectly clear that multiple people are involved, Turkish speakers very often use the singular verb bekledi to avoid unnecessary repetition.

Where does the letter n come from before the -da in salonunda?