Assertion: gettysburg battlefield | /r/HasProperty | situated within the potomac river watershed
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Source sentences:
text: Within 10 miles (16 km) of the Maryland/Pennsylvania state line, the Gettysburg battlefield is situated in the Gettysburg-Newark Basin of the Pennsylvania Piedmont entirely within the Potomac River Watershed near the Marsh and Rock creeks' triple point with the Susquehanna River Watershed (near Oak Hill) occupying an area 3.33 by 5.33 miles (5.4 km × 8.6 km).