Assertion: arsenic | /r/HasProperty | natural element
Facets:
Source sentences:
text: 1.1 Arsenic is a natural element which behaves like a metal.
text: Because arsenic is so lethal, many people are surprised to find out that it is, in fact, a natural substance found commonly in the crust of the Earth.
text: Arsenic is a natural component of the earth
text: Arsenic is a natural element that can be found in rocks and soil, water, air, and in plants and animals.
text: Arsenic is a natural element found widely in the earth's crust.
text: In some places, water may be contaminated by toxics that naturally exist in the earth, such as arsenic and fluoride (a natural substance that causes brown spots on teeth and severe bone weakness).