Where did Dr. Roldan earn his B.S. degree?
Dr. Roldan earned his B.S. in computer science from the Universitat Politecnica de Catalunya.
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### Instruction:
Where did Dr. Roldan earn his B.S. degree?

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### Response:
Dr. Roldan earned his B.S. in computer science from the Universitat Politecnica de Catalunya.<|im_end|>