Assertion: swine flu's case | /r/HasProperty | documented in mexico
Facets:
value: on march
type: TEMPORAL
Source sentences:
text: On March 17 2009, the first case of a novel H1N1 influenza virus infection, also known as swine flu, was documented in Mexico.
text: On March 17, 2009, the first case of a novel H1N1 influenza virus infection, also known as swine flu, was documented in Mexico.