The sentence finishes using a string of "wh-" noun clauses. These clauses aren't queries, so the final a single also needs to not be a matter. "Which just one is definitely the best" is clearly an issue structure, so it makes sense that " 쿠팡플레이는 별도의 요금제 없이 쿠팡 와우 https://justpaste.it/esxyw