Assertion: pneumonia | /r/HasProperty | difficult to treat
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: These pneumonias can sometimes be difficult to treat, especially because the patients are sicker to begin with.
text: Caretakers and family members should stay mindful of symptoms and be aware that pneumonia can be persistent and difficult to treat in elderly populations.
text: Aspiration pneumonia, or pneumonia caused by inhaling one's own gastric juices or food particles, can be more difficult to treat.