question:
The hydraulic crane was invented by Sir William Armstrong in 1846, primarily for use at the Tyneside docks for loading cargo.
Who invented the hydraulic crane in 1846?

answer: yes

question:
My blackness is tending to reddish".
What color did he refer to himself as?

answer: yes

question:
According to the historian A. Aaboe, "all subsequent varieties of scientific astronomy, in the Hellenistic world, in India, in Islam, and in the Westif not indeed all subsequent endeavour in the exact sciencesdepend upon Babylonian astronomy in decisive and fundamental ways."
Who wrote on the clay tablets in Babylonian astronomy?

answer: no

question:
Taking advantage of the Swedish invasion of Poland in 1655, and instead of fulfilling his vassal's duties towards the Polish Kingdom, by joining forces with the Swedes and subsequent treaties of Wehlau, Labiau, and Oliva, Elector and Duke Frederick William succeeded in revoking king of Poland's sovereignty over the Duchy of Prussia in 1660.
Who revoked the King of Poland's sovereignty over Prussia in 1660?

answer:
yes