Assertion: willow's root system | /r/CapableOf | stretch up to 40 metres
Facets:
value: from the trees
type: LOCATION
Source sentences:
text: However, like willows, poplars have very vigorous and invasive root systems stretching up to 40 metres (130 ft) from the trees; planting close to houses or ceramic water pipes may result in damaged foundations and cracked walls and pipes due to their search for moisture.