TASK DEFINITION: In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.
PROBLEM: Who played jj's husband on criminal minds?

SOLUTION: Joshua Regnall Stewart

PROBLEM: Which muslim leader received the title of knighthood in 1888?

SOLUTION: Sir Syed Ahmed Taqvi bin Syed Muhammad Muttaqi

PROBLEM: Which delta is the largest delta in the world?

SOLUTION:
known as the blue lake