.htaccess

Options +FollowSymLinks
# Turn off MultiViews
Options -MultiViews

# Directive to ensure *.rdf files served as appropriate content type,
# if not present in main apache config
AddType application/rdf+xml .rdf
AddType application/rdf+xml .owl
AddType text/turtle .ttl
AddType application/n-triples .nt
AddType application/ld+json .jsonld

RewriteEngine on

#Rewrite rules for aco
RewriteCond %{HTTP_ACCEPT} !application/rdf\+xml.*(text/html|application/xhtml\+xml|text/\*|\*/\*)
RewriteCond %{HTTP_ACCEPT} text/html [OR]
RewriteCond %{HTTP_ACCEPT} application/xhtml\+xml [OR]
RewriteCond %{HTTP_ACCEPT} text/\* [OR]
RewriteCond %{HTTP_ACCEPT} \*/\* [OR]
RewriteCond %{HTTP_USER_AGENT} ^Mozilla/.*
RewriteRule ^aco$ http://www.audiocommons.org/ac-ontology/aco.html  [R=303,NE,L]
RewriteCond %{HTTP_ACCEPT} ^.*application/rdf\+xml.*
RewriteRule ^aco$ http://www.audiocommons.org/ac-ontology/aco.owl [R=303,NE,L]
RewriteCond %{HTTP_ACCEPT} ^.*text/turtle.*
RewriteRule ^aco$ http://www.audiocommons.org/ac-ontology/aco.ttl [R=303,NE,L]
RewriteCond %{HTTP_ACCEPT} ^.*application/n-triples.*
RewriteRule ^aco$ http://www.audiocommons.org/ac-ontology/aco.nt [R=303,NE,L]
RewriteCond %{HTTP_ACCEPT} ^.*application/ld+json.*
RewriteRule ^aco$ http://www.audiocommons.org/ac-ontology/aco.jsonld [R=303,NE,L]
#default response: owl
RewriteRule ^aco$ http://www.audiocommons.org/ac-ontology/aco.owl [R=303,NE,L]