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.

Who was the winner of total drama island?
Gwen

Where does implantation of the blastocyst take place?
wall of the uterus

Bt-cotton is genetically engineered by inserting a gene from a?

Bacillus thuringiensis