Open Census MCP Server

@prefix cendata: <https://raw.githubusercontent.com/yourrepo/census-mcp-server/main/ontology#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix skos: <http://www.w3.org/2004/02/skos/core#> . # Official Census Geographic Hierarchy # Based on Standard Hierarchy of Census Geographic Entities # Level 0 - Root cendata:Nation a skos:Concept ; rdfs:label "Nation" ; rdfs:comment "Singleton United States root geography" . # Level 1 - Major divisions cendata:Region a skos:Concept ; rdfs:label "Census Region" ; rdfs:comment "4 Census regions (Northeast, Midwest, South, West)" ; skos:broader cendata:Nation . cendata:Division a skos:Concept ; rdfs:label "Census Division" ; rdfs:comment "9 divisions nested in regions" ; skos:broader cendata:Region . cendata:State a skos:Concept ; rdfs:label "State" ; rdfs:comment "50 states + DC + PR" ; skos:broader cendata:Nation . # Level 2 - County and equivalent cendata:County a skos:Concept ; rdfs:label "County" ; rdfs:comment "County or county equivalent" ; skos:broader cendata:State . cendata:Place a skos:Concept ; rdfs:label "Place" ; rdfs:comment "Incorporated places and CDPs" ; skos:broader cendata:State . # Level 3-5 - Small area cendata:CensusTract a skos:Concept ; rdfs:label "Census Tract" ; rdfs:comment "Small statistical subdivisions of counties" ; skos:broader cendata:County . cendata:BlockGroup a skos:Concept ; rdfs:label "Block Group" ; rdfs:comment "Subdivisions of census tracts" ; skos:broader cendata:CensusTract . cendata:CensusBlock a skos:Concept ; rdfs:label "Census Block" ; rdfs:comment "Atomic geography - smallest entity" ; skos:broader cendata:BlockGroup .