<http://webisa.webdatacommons.org/253329544>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<hindawi.com> .
<http://webisa.webdatacommons.org/prov/60395596>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/253329544> .
<http://webisa.webdatacommons.org/253329544>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/462793026>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/253329544> .
<http://webisa.webdatacommons.org/253329544>	<http://www.w3.org/ns/prov#value>	"Secondly, the sensing properties, especially the selectivity and recovery, have to be improved." .