Assertion: oxygen | /r/HasProperty | treated
Facets:
value: often
type: TEMPORAL
value: from the other chalcogens
type: OTHER
value: separately
type: MANNER
Source sentences:
text: Often, oxygen is treated separately from the other chalcogens, sometimes even excluded from the scope of the term "chalcogen" altogether, due to its very different chemical behavior from sulfur, selenium, tellurium, and polonium.