Assertion: roman road | /r/CapableOf | use deep roadbeds of crushed stone
Facets:
value: to ensure
type: PURPOSE
value: as an underlying layer
type: MANNER
Source sentences:
text: The Roman roads used deep roadbeds of crushed stone as an underlying layer to ensure that they kept dry, as the water would flow out from the crushed stone, instead of becoming mud in clay soils.
text: These 'Roman roads' used deep roadbeds of crushed stone as an underlying layer to ensure that they kept dry, as the water would flow out from the crushed stone, instead of becoming mud in clay soils.