Assertion: brain tumor's symptom | /r/CapableOf | go unnoticed
Facets:
value: for months
type: TEMPORAL
value: often
type: TEMPORAL
Source sentences:
text: A brain tumor in dogs are difficult to diagnose because the symptoms can be attributed to many different things and often go unnoticed.
text: With a slow growing tumor the symptoms may develop slowly and go unnoticed or are associated with other ailments.
text: Symptoms can develop slowly and subtly and may go unnoticed for months.