Read the following passage and then answer the question.
Lisa knew all of the seven dwarfs except one. She remembered Grumpy, Sleepy and Bashful. And of course she couldn't forget Doc and Dopey. Dopey was her favorite. But there was one she just could not remember. Let's see. There's also Sneezy, and that's six. But she could not remember that last one. What was his name?
Dopey was Lisa's favorite dwarf.
Lisa could not remember the name of one of the dwarfs.
There were seven dwarfs in all.
Lisa had a good memory.