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Each ConceptScheme determines a CRM type (rso:hasRange), which in term determines which FRs (searches) are applicable to it. The mechanism is described in [Meta-Thesaurus and FR Names#Thesaurus to FR Compatibility|Meta-Thesaurus and FR Names#Thesaurus to FR Compatibility]. Consequently RS needs each term to be attached to a single ConceptScheme.

The CRM types are shown on the diagram at the end of that page, and listed below. For each CRM type we give the relevant ConceptSchemes. While ULAN and TGN map to one type each, AAT comprises several [Facets|http://www.getty.edu/vow/AATHierarchy?find=formica&logic=AND&note=&subjectid=300000000] (top-level URLs) that map to different types:
- crm:E39_Actor: ULAN, YCBA People
- crm:E53_Place: TGN, YCBA Places

h3. AAT Concept Schemes
- (-) Export AAT terms to different concept schemes. Use the actual AAT Facet as concept scheme (I may be recommending something similar to Getty as well), but isolate in a prefix definition. Eg:
(-) Declare different AAT concept schemes in the Meta Thesaurus, as per the type breakdown above. Use the actual [AAT Facet|http://www.getty.edu/vow/AATHierarchy?find=&logic=AND&note=&english=N&subjectid=300000000]:
{noformat}
<http://vocab.getty.edu/aat/300264091> a skos:ConceptScheme; rdfs:label "AAT Materials".
<http://vocab.getty.edu/aat/300264090> a skos:ConceptScheme; rdfs:label "AAT Activities/Processes/Techniques".
<http://vocab.getty.edu/aat/300264088> a skos:ConceptScheme; rdfs:label "AAT Styles/Periods".
<http://vocab.getty.edu/aat/300000000> a skos:ConceptScheme; rdfs:label "AAT". # all the rest of AAT
{noformat}

(-) Export AAT terms to these different schemes, but isolate in a prefix definition:
{noformat}
@prefix aat_materials: <http://vocab.getty.edu/aat/300264091> . # Materials Facet
@prefix aat_activities: <http://vocab.getty.edu/aat/300264090> . # Activities Facet, includes Processes and Techniques
<http://vocab.getty.edu/aat/300250148> skos:inScheme aat: . # horses (animals) [prefLabel=Equus caballus (species)]: Agents facet
{noformat}
-- (-) You already do this for Technique but use a Yale URL for the scheme (may be ok for now, but need to change in the future)

You already do this for Technique but use a Yale scheme
{noformat}
aat:230058 a skos:Concept; skos:prefLabel "oil gilding";

Limitation:
- If a painting has a *Subject* selected from Materials, Activities or Styles then currently it cannot be found (since a term from these facets does not invoke the is/has/about FR). But such Subject is not very likely
- RS currently needs each term to be assigned to a single concept scheme.
- Each term invokes one set of FRs, as per [Meta-Thesaurus and FR Names#FR Names Table].
- The "split facets" Materials; Activities; Styles invoke these corresponding FRs: made of; used technique; was present at, about period.
- Object Type, Shape, About subject (where the subject is a type or Iconclass, not Period/Agent/Place) are mapped to E55_Type and thus to FR "is/has/about"
- So if a painting has a *Subject* selected from the "split facets", currently it cannot be found through this term. But such Subject is not very likely
- {status:title=future|color=blue} eExtend RS to handle AAT as one ConceptScheme that includes a number of facets (hierarchies) for object type, material, technique, etc