The week ends with several data points on Friday, including two releases on output, the consumer price index, and the first monthly look at consumer sentiment. Before the open, futures are being weighed down as a result of weaker-than-expected GDP numbers from Europe; the Euro zone contracted 2.5% in Q1, half a percentage point worse than forecasts. At 8:30 am EST, the Consumer Price Index is expected to remain unchanged for April, following a -0.1% reading in March; core prices ― which exclude volatile...