Assertion: weeping willow's root system | /r/CapableOf | crack pavement
Facets:
Source sentences:
text: On the face of it, that might seem like a good thing, but fast-growing trees -- think willows, poplars, silver maple, mulberry -- are the products of aggressive, wide-spreading, shallow root systems that crack pavement, damage foundations, protrude above the soil, and invade water lines.