Assertion: balloon | /r/HasProperty | each of the last three years
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Source sentences:
text: The Alliance for the Great Lakes' annual "Adopt-a-Beach" shoreline cleanup program has found between 4,400 and 7,200 balloons or pieces of balloon debris on Great Lakes beaches each of the last three years — and the variation in the numbers can most likely be attributed to the number of volunteers on a particular beach in a certain year, not less balloon waste, said Alliance spokeswoman Jennifer Caddick.