answer: #Person2# went to the speech yesterday but left early because #Person2# thinks the speech was boring. #Person1# thinks the speeches were interesting and informative and #Person2# shouldn't have left so early.
documents: #Person1#: Did you go to listen to the speeches yesterday? I mean at the conference.
  #Person2#: Yeah, I did. I listen to these so-called keynote speech about physical geography by Professor Henry Hadley. Long and boring. I left the lecture hall before he finished.
  #Person1#: Where did you go?
  #Person2#: I went to the library and borrowed some books and then watched some videos in the dormitory. Did you stay in the lecture hall all afternoon?
  #Person1#: Yes, another 3 professors gave speeches. Mark Lowcock, Heather Anewet and Jackson Lee.
  #Person2#: What did you think of their speeches?
  #Person1#: Well, I have to admit I can't follow perfectly all of the speeches, but I think all of them were interesting and full of useful information. I learned a lot. I really think you shouldn't have left the lecture hall before the speeches ended.