instruction:
In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
question:
Egyptologists believe the pyramid was built as a tomb for the Fourth Dynasty Egyptian pharaoh Khufu (often Hellenized as 'Cheops') and was constructed over a 20-year period. Khufu's vizier, Hemiunu (also called Hemon) is believed by some to be the architect of the Great Pyramid. It is thought that, at construction, the Great Pyramid was originally 280 Egyptian Royal cubits tall (146.5 metres (480.6 ft)), but with erosion and absence of its pyramidion, its present height is 138.8 metres (455.4 ft). Each base side was 440 cubits, 230.4 metres (755.9 ft) long. The mass of the pyramid is estimated at 5.9 million tonnes. The volume, including an internal hillock, is roughly 2,500,000 cubic metres (88,000,000 cu ft).
answer:
who built the great pyramid of giza and why


question:
The Arab historian al-Maqrīzī, writing in the 15th century, attributes the loss of the nose to iconoclasm by Muhammad Sa'im al-Dahr -- a Sufi Muslim from the khanqah of Sa'id al-Su'ada -- in AD 1378, upon finding the local peasants making offerings to the Sphinx in the hope of increasing their harvest. Enraged, he destroyed the nose, and was later hanged for vandalism. Al-Maqrīzī describes the Sphinx as the 'talisman of the Nile' on which the locals believed the flood cycle depended.
answer:
why is the nose on the sphinx missing


question:
The name 'PNC' is derived from the initials of both of the bank's two predecessor companies: Pittsburgh National Corporation and Provident National Corporation, which merged in 1983.
answer:

what do the letters pnc bank stand for