OK. You'll be given the following question. Please do chain-of-thought reasoning.
Pick which sentence is not logical.
Options:
- Sentence A: "Three people ate dinner and one of them was a vegetarian."
- Sentence B: "One person ate dinner and three of them were vegetarians."

user
If only one person was eating dinner, there could not have been three vegetarians.
Thus, the answer is Sentence B.
assistant