About: http://webisa.webdatacommons.org/46504044

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	It lacks customization options, forces you to go through lessons whether you know the material or not, and it relies heavily on romaji (the Romanization of Japanese characters), which most teachers agree is an impediment to learning.
http://www.w3.org/ns/prov#wasQuotedFrom	1up.com