question: Dr.  Garrison has told all the towns people that he will get across Grass Lake with no assistance.  He told everybody to meet him at Grass Lake on Sunday at 12:00.  So when everybody showed up on Sunday, Dr. Garrison finished his task by getting across Grass Lake.  How did he do it?
choices.label: A B C D E
choices.text: hike grass lake was frozen niagara see territorial waters