With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Manitoba is a region.
text_B: Bertram Hopkinson -LRB- 11 January 1874 -- 26 August 1918 -RRB- was a British patent lawyer and Professor of Mechanism and Applied Mechanics at Cambridge University .. Professor of Mechanism and Applied Mechanics. Professor of Engineering, Cambridge University. Cambridge University. Cambridge University. In this position he researched flames , explosions and metallurgy and became a pioneer designer of the internal combustion engine .. metallurgy. metallurgy. internal combustion engine. internal combustion engine. Hopkinson was born in Birmingham , in 1874 , the son of John Hopkinson an electrical engineer .. Birmingham. Birmingham. John Hopkinson. John Hopkinson. He read law at Trinity College , Cambridge , and became a lawyer after his graduation .. Following the death of his father , brother and two of his sisters in a mountaineering accident in 1898 , Hopkinson switched to a career in engineering instead .. In 1903 , Hopkinson was elected to the Cambridge chair in mechanism and applied mechanics , and in 1910 he was elected a Fellow of the Royal Society .. Fellow of the Royal Society. Fellow of the Royal Society. During World War I he was commissioned into the Royal Engineers , and opened a research establishment at Orford Ness where he and his team researched weapons , sights , and ammunition .. World War I. World War I. Royal Engineers. Royal Engineers. Orford Ness. Orford Ness. In 1915 , Hopkinson discovered a similarity relation between the masses of explosive charges and their effects at a given distance .. The same similarity relation was discovered independently in 1925 by Karl Julius Cranz in Germany .. Karl Julius Cranz. Karl Julius Cranz. He learnt to fly and died on 26 August 1918 when his Bristol Fighter crashed en route from Martlesham Heath to London .. Bristol Fighter. Bristol F.2 Fighter. He is buried in the Parish of the Ascension Burial Ground in Cambridge , with his wife Mariana , nee Siemens ; they had seven daughters .. Parish of the Ascension Burial Ground. Ascension Parish Burial Ground, Cambridge
not_related.