Input (grade 10): On September 14, 2001, in the aftermath of the September 11 attacks, Graham led a prayer and remembrance service at Washington National Cathedral, which was attended by President George W. Bush and past and present leaders.
Output (grade 7): On September 14, 2001, shortly after the September 11, 2001 attacks, Graham led prayer at the Washington National Cathedral. President George W. Bush went to this service.