Assertion: mineral's silicon | /r/HasProperty | si
Facets:
Source sentences:
text: Silicon (Si): 27.2%
text: Nonsilicate minerals: A mineral without silicon (Si).
text: Elements known to be present on the lunar surface include, among others, oxygen (O), silicon (Si), iron (Fe), magnesium (Mg), calcium (Ca), aluminium (Al), manganese (Mn) and titanium (Ti).