Assertion: bipolar disorder's episode | /r/HasProperty | needed
Facets:
value: to make the diagnosis
type: PURPOSE
Source sentences:
text: Because a manic or hypomanic episode is needed to diagnose bipolar disorder, some people are diagnosed with major depression at first.
text: I disorder: At least one manic episode is necessary to make the diagnosis;  depressive episodes are common in the vast majority of cases with bipolar disorder I, but are unnecessary for the diagnosis.  
text: Because a manic or hypomanic episode is needed to diagnose bipolar disorder, some people are diagnosed with major depression at first.
text: At least one manic or hypomanic episode is necessary to make a diagnosis of bipolar disorder.