Assertion: silicon | /r/HasProperty | common element
Facets:
value: very
type: DEGREE
value: on earth
type: LOCATION
Source sentences:
text: Silicon is a fairly common element on Earth -- beach sand, for instance, is made from silicon compounds.
text: Silicon is needed for synthesis of elastin and collagen, of which the aorta contains the greatest quantity in the human body, and has been considered an essential element; nevertheless, it is difficult to prove its essentiality, because silicon is very common, and hence, deficiency symptoms are difficult to reproduce.
text: Silicon is a very common element -- for example, it is the main element in sand and quartz.