Assertion: mucus's color | /r/CapableOf | indicate old blood
Facets:
value: from bronchitis
type: OTHER
value: from tuberculosis
type: OTHER
value: from other
type: OTHER
value: from , more serious lung diseases
type: OTHER
value: from emphysema
type: OTHER
Source sentences:
text: Coal workers may experience black mucus as well, but the color can also indicate old blood from tuberculosis, bronchitis, emphysema or other, more serious lung diseases.