Article: Pope Paul VI left the Vatican to go to the papal summer residence, Castel Gandolfo, on 14 July 1978, visiting on the way the tomb of Cardinal Giuseppe Pizzardo, who had introduced him to the Vatican half a century earlier. Although he was sick, he agreed to see the new Italian President Sandro Pertini for over two hours. In the evening he watched a Western on TV, happy only when he saw "horses, the most beautiful animals that God had created." He had breathing problems and needed oxygen. On Sunday, at the Feast of the Transfiguration, he was tired, but wanted to say the Angelus. He was neither able nor permitted to do so and instead stayed in bed, his temperature rising.

Question: For how long did an ailing Paul VI meet with Sandro Pertini in 1978?
two hours