Question: Failing to finish doesn't mean he failed.
Even if he did not finish it does not mean he did not succeed.
OPTIONS:
- yes
- it is not possible to tell
- no

Answer: yes

Question: Not all anthropologists agree.
Not everyone that is in the field of anthropology agrees, at least for now.
OPTIONS:
- yes
- it is not possible to tell
- no

Answer: it is not possible to tell

Question: You will remember my speaking of a stain on the carpet in Mrs. Inglethorp's room?
There was a stain on the carpet in Mrs. Inglethorp's room.
OPTIONS:
- yes
- it is not possible to tell
- no

Answer:
yes