Assertion: phosphate's amount | /r/CapableOf | vary among the 12 samples
Facets:
value: in the compost
type: LOCATION
value: significantly
type: DEGREE
Source sentences:
text: As shown in Table 1, the amount of P, whether P2O5 or WEP, in the compost varies significantly among the 12 samples — about a 10-fold difference between the lowest and highest values.