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n4google.
isaphttp://webisa.webdatacommons.org/prov/
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rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
Subject Item
isa:208951978
rdf:type
prov:Entity
prov:value
The above embodiment is an example having the separate type optical head, but the present invention can also be applied similarly to the apparatus having ordinary optical heads other than the separate optical head, without having to be limited to the separate type.
prov:wasQuotedFrom
n4:com
Subject Item
isap:217196104
prov:wasDerivedFrom
isa:208951978