<human>: Question: What aircraft was hijacked?
Answer: On September 11, 2001, 53 Army civilians (47 employees and six contractors) and 22 soldiers were among the 125 victims killed in the Pentagon in a terrorist attack when American Airlines Flight 77 commandeered by five Al-Qaeda hijackers slammed into the western side of the building, as part of the September 11 attacks.
 Is the question answered in a satisfactory fashion?

OPTIONS:
- yes
- no
<bot>: yes