Assertion: gerbil's foot | /r/HasProperty | 240 to 500 metres
Facets:
Source sentences:
text: The size of the larger sand-dune chains is considerable: they range from 100 to 500 feet (30 to 150 metres) in height and 800 to 1,650 feet (240 to 500 metres) in width, with a distance between the chains of 0.5 to 3 miles (1 to 5 km).