US STOCKS-Wall St set to open lower ahead of Fed meet
* May retail sales rise 0.5 pct vs est. 0.3 pct
* German bond yields fall below zero
* Baidu falls after lowering current-quarter forecast
* Indexes down: Dow 51 pts, S&P 6.5 pts, Nasdaq 15.75 pts (Adds details, comments, updates prices)
By Yashaswini Swamynathan
June 14 (Reuters) - Wall Street was set for a lower opening for the fourth straight day as investors awaited the Federal Reserve's policy meeting and a referendum on Britain's European Union membership.
The Federal Open Market Committee (FOMC) will commence its two-day meeting on Tuesday to decide whether the U.S. economy has recovered enough to be able to absorb an interest rate hike.
While traders have discounted a hike this month, they will parse Fed Chair Janet Yellen's speech at a conference on Wednesday for clues on the health of the economy and the trajectory of hikes.
Yellen, who had been dropping hints last month of a rate hike in the near term, toned down her comments after a dismal May employment report set off fresh concerns of the strength of the economy. Continuación...