This past summer , for example , an alarming number of fatal breakdowns occurred in the opening days of meetings in Illinois and California : 16 horses were euthanized over 41 racing days at Arlington Park in suburban Chicago , and 7 were put down over the first eight days at Del Mar , near San Diego . ''
Illinois /location/location/contains Chicago
California /location/location/contains San Diego
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Illinois
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Chicago
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California
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San Diego
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