Add an example showing how availability of a Book at a Library is modelled #733
Description
Raw materials:
- https://www.w3.org/community/schemabibex/wiki/Holdings_via_Offer
- http://catalog.mvlc.org/eg/opac/record/1003645?query=linear%20algebra;qtype=keyword;locg=1
- http://acorn.biblio.org/eg/opac/record/1680040?query=linear%20algebra;qtype=keyword;locg=1
/cc @dbs @RichardWallis @erimille @vholland
Consider illustrating use of http://schema.org/parentOrganization http://schema.org/department