Input: the northern expedition was a guomindang movement against whom in china?

Output: other regional warlords

Input: what is one of the greatest structural achievements of the bronze age?

Output: the corbelled arch

Input: who was the first actor to play sherlock holmes?

Output: C.H.E. Brookfield

Input: lord please give me the serenity to accept the things i cannot change?

Output:
Serenity Prayer