http://research.microsoft.com/en-us/ http://research.microsoft.com/en-us/ http://research.google.com/ http://research.google.com/ http://research.apple.com/ h

http://research.microsoft.com/en-us/ http://research.microsoft.com/en-us/ http://research.google.com/ http://research.google.com/ http://research.apple.com/ http://research.apple.com/ Hint: one of these things is not like the other...see if you can figure out which using only the power of curl.