question: What two people are responsible for the first still in existence book in the Estonian Language ?
answer: S. Wanradt and J. Koell
turker_answer: S. Wanradt and J. Koell are responsible for the first still in existence book in the Estonian Language .
rule-based: Responsible for the first still in existence book in the Estonian Language are S. Wanradt and J. Koell .