About: http://webisa.webdatacommons.org/199217288

Property	Value
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	You are passing the no markers option to \addplot+, but no markers is an option available for the axis environment, not for \addplot commands.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com