Assertion: chlorine dioxide's chlorine | /r/HasProperty | derived in the past
Facets:
value: from volcanic activity
type: OTHER
value: most likely
type: DEGREE
value: from briny water
type: LOCATION
Source sentences:
text: A Mars expert at the University of Michigan in Ann Arbor, US, stated that "the presence of perchlorates implies a source of chlorine, which was most likely derived from briny water or volcanic activity in the past".