Assertion: metal's compound | /r/HasProperty | inaccessible
Facets:
value: mostly
type: DEGREE
value: to plants
type: TRANSITIVE-OBJECT
Source sentences:
text: Artificial phosphate fertilisation is necessary because phosphorus is essential to all living organisms; natural phosphorus-bearing compounds are mostly insoluble and inaccessible to plants, and the natural cycle of phosphorus is very slow.