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Given a text, write a compressed version of it in a single sentence.

Between 1991 and 1997, a U.S. Department of Defense psychopharmacology demonstration project involving two to four years ' training produced 10 military psychologists who can write prescriptions.
Output:
A 2 to 4 year project between 1991-1997 by the Department of Defense, produced 10 military psychologists that can write prescriptions.