The conversation between human and AI assistant.
[|Human|] Provide an example of a sentence structure with a noun clause.
[|AI|] "Whoever finishes first will win the prize" is an example of a sentence structure with a noun clause. In this sentence, "whoever finishes first" acts as a noun clause serving as the subject of the sentence.
[|Human|] 
Provide an example of a sentence structure with a noun clause.