input question: Is it true that "Adam would be gone by this time." if "Adam can't leave work here until Bob arrives to replace him. If Bob had left home for work on time, he would be gone by this time." is true?
output answer: yes

input question: Is it true that "The scientists appeared two years ago." if "The scientists are studying three species of fish that have recently been found living in the Indian Ocean. They appeared two years ago." is true?
output answer: no

input question: Is it true that "We couldn't reach the lake." if "The path to the lake was blocked, so we couldn't reach it." is true?
output answer: yes

input question: Is it true that "The piano was broken, so he had to sing instead." if "Sam pulled up a chair to the piano, but it was broken, so he had to sing instead." is true?
output answer:
yes