Assertion: purple dye | /r/HasProperty | extracted
Facets:
value: from several genera of sea snails
type: OTHER
Source sentences:
text: The premier luxury dye of the ancient world was Tyrian purple or royal purple, a purple-red dye which is extracted from several genera of sea snails, primarily the spiny dye-murex Murex brandaris (currently known as Bolinus brandaris).