input question: Is it true that "Pete is very successful." if "Pete envies Martin although he is very successful." is true?
output answer: yes

input question: Is it true that "Prehistoric humans hunted for evidence on the river banks." if "Archaeologists have concluded that humans lived in Laputa 20,000 years ago. They hunted for evidence on the river banks." is true?
output answer: no

input question: Is it true that "The fish was hungry." if "The fish ate the worm. It was hungry." is true?
output answer: yes

input question: Is it true that "Frank was the winner of the competition." if "Frank felt vindicated when his longtime rival Bill revealed that he was the winner of the competition." is true?
output answer:
yes