conversations.from: human
conversations.value: Find the answer to the math problem: Emily has 6 marbles. Megan gives Emily double the number she has. Emily then gives Megan back half of her new total plus 1. How many marbles does Emily have now?
conversations.from: assistant
conversations.value: Megan gives Emily 6*2=12 marbles.
  Emily then has 6+12=18 marbles.
  Emily gives Megan 18/2+1=10 marbles.
  Emily has 18-10=8 marbles now.