The man had on a headlamp with a tan cotton band, like some dentists wore, and a type of thick black marker in his breast pocket.

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He was wearing a light-coloured hat with a dark band, Burberry-type scarf, green jacket, blue jeans and white trainers.

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Alex Gilbert, 27, who works for a nonprofit in Houston that teaches creative writing to kids, is still puzzling over an old friend "a particularly masculine-type dude" who plays in a heavy-metal band and heads a motorcycle club yet posts videos on Facebook of "uber cute" kittens.

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