conversations.from: human
conversations.value: There are 40 students in a class. If 1/10 are absent, 3/4 of the students who are present are in the classroom, and the rest are in the canteen, how many students are in the canteen?
conversations.from: assistant
conversations.value: Out of the 40, 40 x 1/10 = 4 students are absent.
  So, 40 - 4 = 36 students are present in school.
  Out of the 36, 36 x 3/4 = 27 students are in the classroom.
  This means, 36 - 27 = 9 students are in the canteen.