Assertion: sulfur's form | /r/HasProperty | allotropic
Facets:
Source sentences:
text: Sulfur exists in two allotropic forms.
text: Sulfur is a bright yellow solid that can exist in many allotropic forms with slightly different melting points, all around 239°F (115°C).
text: It displays three allotropic forms: orthorhombic, monoclinic and amorphous.