Assertion: silica | /r/HasProperty | same material
Facets:
Source sentences:
text: Silica, which is actually silicon dioxide (SiO2), is the same material found in quartz.
text: Silica, or silicon dioxide (SiO2), is the same material found in quartz.
text: Silica is the same material found in quartz, and in a gel form it contains millions of pores capable of absorbing and holding moisture—hence its use in packaging.
text: Silica, or silicon dioxide (SiO2), is the same material found in quartz.