yes
Question and rationale: The question is: Would toast for a vegan have margarine instead of butter?
Margarine is typically made without the use of dairy ingredients. Vegans do not eat any animal products, including dairy and eggs.

no
Question and rationale: The question is: Did Pedubastis I know Japanese people?
Pedubastis I was a pharaoh that died in 800 BC. Japan's origins are in 600 BC according to a letter of the Sui dynasty. Pedubastis I ruled over the country of Egypt.

no
Question and rationale:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The question is: Was Charlemagne's father instrumental in outcome of the Battle of Tours?
Charlemagne's father was Pepin the Short. Pepin the Short's father was Charles Martel. Charles Martel led an army against the Umayyads at the Battle of Tours. Pepin the Short spent his early years being raised by monks.