answer: #Person2# helps #Person1# buy four pounds of the extra lean ground beef.
documents: #Person1#: Could I get some beef? 
  #Person2#: What kind of beef would you like to get? 
  #Person1#: Ground beef would be fine. 
  #Person2#: How many pounds would you like? 
  #Person1#: Four pounds is enough. 
  #Person2#: What kind of ground beef do you want? 
  #Person1#: I'm going to need extra lean ground beef. 
  #Person2#: I can get that for you. 
  #Person1#: Thanks so much. 
  #Person2#: You're welcome, Let me go wrap the ground beef up for you. 
  #Person1#: Thanks for everything.