Commodity stocks lift shares; Brexit, inflation in focus

By Nigel Stephenson LONDON (Reuters) - Rising commodity prices pulled shares higher and the dollar slipped from a seven-month peak on Tuesday, while sterling jumped on suggestions the UK parliament would have to ratify any deal for Britain to leave the European Union. U.S. inflation data due later will also be a focus after Federal Reserve Chair Janet Yellen suggested last week the central bank could allow inflation to top its 2 percent target. Britain's internationally-focused FTSE 100 index, i