Assertion: crust's amount | /r/HasProperty | much less than 1%
Facets:
value: usually
type: DEGREE
Source sentences:
text: The common rock constituents of the Earth's crust are nearly all oxides; chlorine, sulfur and fluorine are the only important exceptions to this and their total amount in any rock is usually much less than 1%.
text: The most common rock constituents of the crust are nearly all oxides: chlorine, sulphur, and fluorine are the important exceptions to this and their total amount in any rock is usually much less than 1%.