Assertion: mustard seed | /r/HasProperty | black
Facets:
Source sentences:
text: Mustard seeds can be white, yellow, black or brown, and are derived from three different plants.
text: Mustard oil (sarson ka tel) is extracted from mustard seeds (black, brown and white), and is reddish brown or amber in colour.
text: They can be yellow, white, black or brown.