in december 1972, robert and helen celebrated the birth of their only child together, son derek.
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. tusk made his remarks about the u.s. president's reliability before he chaired a meeting in bulgaria of the 28 leaders whose countries make up the world's biggest trading bloc.
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"i hit the lottery," derek valenzuela, now 45 and a professional baseball scout for the chicago white sox, said of being born into the family.
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