Assertion: bronchitis's cough | /r/CapableOf | become productive
Facets:
value: with purulent sputum
type: OTHER
Source sentences:
text: The cough will likely be dry at first, and then become productive, which means it will produce mucus.
text: However, this cough does not go away but instead becomes productive.
text: Coughing later becomes productive with purulent sputum.