answer: #Person1# wants to buy some cloth to make a curtain. #Person2# recommends the twill.
documents: #Person1#: I want to buy some cloth to make a curtain. Which one is better? 
  #Person2#: What about the twill? It washes well and won't lose shape. 
  #Person1#: What about the cotton one? 
  #Person2#: Well, it's cheap and actually the color fades easily when washed.