conversations.from: human
conversations.value: John is 15 cm taller than Lena and 6 cm shorter than Rebeca. If John has a height of 152 cm, what is the height of Lena and Rebeca together?
conversations.from: assistant
conversations.value: Lena is 152 cm - 15 cm = 137 cm tall
  Rebeca is 152 cm + 6 cm = 158 cm tall
  So, the total height of Lena and Rebeca would be 137 cm + 158 cm = 295 cm.