Assertion: hiccup's cause | /r/HasProperty | the closure of the epiglottis
Facets:
value: according to wikipedia site
type: OTHER
Source sentences:
text: According to Wikipedia site, the cause of the sound of hiccups is the closure of the epiglottis but according to WebMD (http://www.webmd.com/a-to-z-guides/hiccups-topic-overview), the sound is due to the closure of the vocal cords.