<http://webisa.webdatacommons.org/prov/449506133>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/80945338> .
<http://webisa.webdatacommons.org/80945338>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<memorialhermann.org> .
<http://webisa.webdatacommons.org/80945338>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/80945338>	<http://www.w3.org/ns/prov#value>	"Some neurologic diseases, such as a stroke, may result in malfunctioning of the cricopharyngeal muscle.SymptomsA small Zenker???s diverticulum can be asymptomatic (exhibit no symptoms)." .