<http://webisa.webdatacommons.org/102742509>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/57421741>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/102742509> .
<http://webisa.webdatacommons.org/102742509>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/102742509>	<http://www.w3.org/ns/prov#value>	"As such, semaphores are widely used to prevent asynchronous accesses to resources such as devices or memory locations." .
<http://webisa.webdatacommons.org/prov/103363488>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/102742509> .