Ever careful, WA even checks to make sure that you meant Mary as a female name. Click the "Mary (male)" link and you discover that each year about 67 very unhappy boys are named Mary:

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I wouldn't expect pop culture to be a top priority for Stephen Wolfram, so it's probably not surprising that the results in that area are pretty mixed. When I asked for Star Trek, I got a table with most of the basic information I'd want about the movie, even down to the name of the actor who played "Burly Cadet #1." And a drop-down menu let me change the results if I was more interested in "The Wrath of Khan" (and, really, who wouldn't be?):

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My search for Amy Winehouse was disappointingly shallow, though - just her profession and date and place of birth. No professional biography, no discography, no arrest records: