Assertion: rack locomotive | /r/HasProperty | salamanca
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Source sentences:
text: In 1812, Matthew Murray's twin-cylinder rack locomotive Salamanca first ran on the edge-railed rack-and-pinion Middleton Railway; this is generally regarded as the first commercially successful locomotive.
text: Matthew Murray's rack locomotive, the "Salamanca" built for the Middleton Railway (Leeds) was the first commercially successful steam locomotive, with a twin-cylinder locomotive light enough to not damage the cast iron tracks and simultaneously solved the problem of wheel slippage (adhesion) via using a driven cog wheel that engaged cast track teeth on one side of the rails- thus Salamanca was also the first commercial track locomotive.