って as a Topic Particle

The easily spoken って is frequently used as a colloquial topic marker. It often appears in questions, where a sentence is spoken, followed by って, followed by a question word like どこ. It can also appear in statements, of course. In written text, the eternally common は is used instead.

リーさんの彼女って、誰？
Who's Lee-san's girlfriend?

カナトのお母さんって、優しくなかった人だろう。
Kanato's mother was not a nice person.

来月の休みって、どこに行きたいね？
Where do you want to go for next month's break?

冷蔵庫の中の血って、飲まないで。
Don't drink the blood that's in the fridge.