Assertion: mucus | /r/HasProperty | sputum
Facets:
value: often
type: TEMPORAL
Source sentences:
text: A cough that is accompanied with mucus or phlegm (sputum), commonly called a "productive cough," is usually a sign that an infection has developed in the lungs.
text: This mucus, also known as sputum, usually starts off as yellow and gradually turns green.
text: Mucus, which is found in the lungs and respiratory track, is often referred to as sputum and helps keep the tissues underneath moist.