Assertion: compound's element | /r/HasProperty | derived for red
Facets:
value: from the greek word
type: OTHER
Source sentences:
text: Andrés Manuel del Río discovered compounds of vanadium in 1801 in Mexico by analyzing a new lead-bearing mineral he called "brown lead", and presumed its qualities were due to the presence of a new element, which he named erythronium (derived from the Greek word for "red", ἐρυθρόν, eruthrón) since upon heating most of the salts turned red.