Assertion: person's symptom | /r/HasProperty | useful
Facets:
value: extremely
type: DEGREE
Source sentences:
text: Signs are much more specific to disease-causing agents than are symptoms and are extremely useful in the diagnosis of a disease and identification of the agent causing the disease.
text: Signs are much more specific to disease-causing agents than are symptoms and are extremely useful in the diagnosis of a disease and identification of the agent causing the disease.