question:
In the 1800s, the city required their installation on buildings higher than six stories to prevent the need for excessively high water pressures at lower elevations, which could break municipal water pipes.
To prevent high water pressures at lower elevations what were built on many of the city's buildings?

answer: no

question:
John XXIII elevated him to the College of Cardinals in 1958, and after the death of John XXIII, Montini was considered one of his most likely successors.
On What date was Pope Paul VI born?

answer: no

question:
Sadat switched Egypt's Cold War allegiance from the Soviet Union to the United States, expelling Soviet advisors in 1972.
Which side of the Cold War was Sadat?

answer: yes

question:
Kufa fell to the Hashimiyya in 749, the last Umayyad stronghold in Iraq, Wasit, was placed under siege, and in November of the same year Abu al-Abbas was recognized as the new caliph in the mosque at Kufa.[citation needed]
Who was the Umayyad governor of Khurasan who was defeated by Abu Muslim?

answer:
no