By Marina Lopes WASHINGTON (Reuters) – International Business Machines Corp is rolling out a cognitive tool powered by its Watson supercomputer that uses companies internal data to answer questions about performance and efficiency, and predict outcomes. IBM said the tool – the latest in a series of Watson products unveiled by IBM – will make more widely available data analytics capabilities long reserved for research scientists. The move is part of IBMs effort to shift resources away from a slumping hardware sector into more profitable fields like cloud computing and analytics. …