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http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The pills contain a number of hormones, including estrogen and progesterone, that work together to prevent ov??? More:http://www.ehow.com/how-does_5234280_should-miss-birth-control-pills_.html?ref=Track2&utm_source=ask
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