Context: However many early history books like the Islamic Conquest of Syria Fatuhusham by al-Imam al-Waqidi state that after the conversion to Islam Muawiyah's father Abu Sufyan ibn Harb and his brothers Yazid ibn Abi Sufyan were appointed as commanders in the Muslim armies by Muhammad. Muawiyah, Abu Sufyan ibn Harb, Yazid ibn Abi Sufyan and Hind bint Utbah fought in the Battle of Yarmouk. The defeat of the Byzantine Emperor Heraclius at the Battle of Yarmouk opened the way for the Muslim expansion into Jerusalem and Syria.

Question: What nation lost the Battle of Yarmouk?
Answer: Byzantine

Question: Who was the Byzantine leader at the Battle of Yarmouk?
Answer: Heraclius

Question: Along with Syria, where did the Muslims extend their control after the Battle of Yarmouk?
Answer: Jerusalem

Question: Who was the father of Yazid ibn Abi Sufyan?
Answer: Abu Sufyan ibn Harb

Question: Along with Muawiyah, Abu Sufyan ibn Harb and Yazid ibn Abi Sufyan, what notable Muslim participated in the Battle of Yarmouk?
Answer: Hind bint Utbah

Question: What is an example of a late history book?
Answer: Unanswerable

Question: What were Muawiyah's father and brothers appointed as before they converted to Islam?
Answer: Unanswerable

Question: Who appointed Muhammad as a commander?
Answer: Unanswerable

Question: Who never fought at the battle of Yarmouk?
Answer: Unanswerable

Question: What battle did the Byzantines win?
Answer: Unanswerable