Assertion: gypsum's amount | /r/HasProperty | introduced into the mixture
Facets:
Source sentences:
text: The tests included in Table 9 concern gypsum boards prepared and treated in the same manner as described in Example 2, except that various amounts of chloride ion were introduced into the mixture along with various amounts of trimetaphosphate ion.
text: The boards were prepared and treated in the same manner as in Example 4, except that various amounts of chloride ion were introduced into the mixture along with various amounts of trimetaphosphate ion.