Assertion: swine flu's case | /r/HasProperty | detected on april
Facets:
Source sentences:
text: Though the H1N1 virus had begun spreading in Mexico, the first case in the United States was detected on April 15, 2009, in a 10-year-old patient in California.
text: The first case of this virus was detected in Mexico in April 2009 and subsequently spread to 74 other countries.
text: Though the H1N1 virus had begun spreading in Mexico, the first case in the United States was detected on April 15, 2009, in a 10-year-old patient in California.