Assertion: cultivator | /r/CapableOf | improve its structure
Facets:
value: to allow water
type: PURPOSE
value: to allow air
type: PURPOSE
Source sentences:
text: Cultivators are mainly used to prepare soil for the plants that will grow there, but they can also remove weeds, sculpt the soil into rows and beds or improve its structure to allow air and water to penetrate more easily to the roots of plants.