conversations.from: human
conversations.value: Kwame studied for the history test for 2.5 hours. Connor studied for 1.5 hours and Lexia studied for 97 minutes. How many minutes more did Kwame and Connor study than Lexia?
conversations.from: assistant
conversations.value: Kwame = 2.5 hours * 60 minutes = 150 minutes
  Connor = 1.5 hours * 60 minutes = 90 minutes
  Kwame + Connor = 150 + 90 = 240 minutes
  240 - 97 = 143 minutes
  Kwame and Conner studied 143 minutes more than Lexia.