Sentence 1: Kate was working on chats hits on Mturk. 
 Sentence 3: After 4 mistakes the system wouldn't let Kate complete the hit 
 Sentence 4:  Kate was forced to return the hit 
 Sentence 5:  She decided to quit working on chat hits 
 Option 1: The other workers kept guessing the wrong items. 
 Option 2: The other workers kept guessing the right items.