conversations.from: human
conversations.value: Find the answer to this math problem: There were 30 women and 20 men who attended the party. After few hours, 2/5 of the total number of people left. If 9 men left the party, how many more women stayed at the party than men?
conversations.from: assistant
conversations.value: There were 30 + 20 = 50 attendees at the party.
  A total of 50 x 2/5 = 20 people left the party.
  Nine of those who left were men while 20 - 9 = 11 of them were women.
  So, 30 - 11= 19 women stayed at the party.
  And 20 - 9 = 11 men stayed at the party.
  Thus, 19 - 11 = 8 more women than men stayed at the party.