conversations.from: human
conversations.value: Georgia is sick and coughs 5 times a minute.  Her brother Robert is also sick but he coughs twice as much as her.  After 20 minutes, how many times have they coughed?
conversations.from: assistant
conversations.value: Robert coughs twice as much as Georgia who coughs 5 times so Robert coughs 2*5 = 10 coughs per minute
  Georgia coughs 5 times and Robert coughs 10 times so together they cough 5+10 = 15 times per minute
  After 20 minutes they will have coughed 15*20 = 300 coughs