@prefix : <http://worldmind.ai/rivers-v4#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix dbr: <http://dbpedia.org/resource/> .

# Advanced Ontology for Rivers Extended Experiment
# Core Entities and Properties

# Classes
:River a owl:Class ;
    rdfs:label "River" ;
    rdfs:comment "A natural flowing watercourse" .

:GeographicFeature a owl:Class ;
    rdfs:label "Geographic Feature" ;
    rdfs:comment "A natural or administrative geographic entity" .

:State a owl:Class ;
    rdfs:label "US State" ;
    rdfs:comment "A US state" .

:County a owl:Class ;
    rdfs:label "County" ;
    rdfs:comment "A county subdivision" .

:Country a owl:Class ;
    rdfs:label "Country" ;
    rdfs:comment "A country or nation" .

:RiverSystem a owl:Class ;
    rdfs:label "River System" ;
    rdfs:comment "A major river system or watershed" .

:Elevation a owl:Class ;
    rdfs:label "Elevation" ;
    rdfs:comment "An elevation measurement in meters" .

# Object Properties
:hasSource a owl:ObjectProperty ;
    rdfs:label "has source" ;
    rdfs:comment "Relates a river to its source feature" ;
    rdfs:domain :River ;
    rdfs:range :GeographicFeature .

:hasMouth a owl:ObjectProperty ;
    rdfs:label "has mouth" ;
    rdfs:comment "Relates a river to its terminus" ;
    rdfs:domain :River ;
    rdfs:range :GeographicFeature .

:hasTributary a owl:ObjectProperty ;
    rdfs:label "has tributary" ;
    rdfs:comment "Relates a river to a tributary" ;
    rdfs:domain :River ;
    rdfs:range :River .

:flowsInto a owl:ObjectProperty ;
    rdfs:label "flows into" ;
    rdfs:comment "Relates a river to another river it flows into" ;
    rdfs:domain :River ;
    rdfs:range :River .

:traverses a owl:ObjectProperty ;
    rdfs:label "traverses" ;
    rdfs:comment "Relates a river to a US state it passes through" ;
    rdfs:domain :River ;
    rdfs:range :State .

:inCounty a owl:ObjectProperty ;
    rdfs:label "in county" ;
    rdfs:comment "Relates a river to a county" ;
    rdfs:domain :River ;
    rdfs:range :County .

:inCountry a owl:ObjectProperty ;
    rdfs:label "in country" ;
    rdfs:comment "Relates a river to a country" ;
    rdfs:domain :River ;
    rdfs:range :Country .

:partOfSystem a owl:ObjectProperty ;
    rdfs:label "part of river system" ;
    rdfs:comment "Relates a river to a river system" ;
    rdfs:domain :River ;
    rdfs:range :RiverSystem .

:drainsInto a owl:ObjectProperty ;
    rdfs:label "drains into" ;
    rdfs:comment "Relates a river to its drainage basin" ;
    rdfs:domain :River ;
    rdfs:range :GeographicFeature .

# Data Properties
:length a owl:DatatypeProperty ;
    rdfs:label "length" ;
    rdfs:comment "River length in meters" ;
    rdfs:domain :River ;
    rdfs:range xsd:double .

:discharge a owl:DatatypeProperty ;
    rdfs:label "discharge" ;
    rdfs:comment "Average discharge in cubic meters per second" ;
    rdfs:domain :River ;
    rdfs:range xsd:double .

:elevation a owl:DatatypeProperty ;
    rdfs:label "elevation" ;
    rdfs:comment "Elevation in meters" ;
    rdfs:domain :GeographicFeature ;
    rdfs:range xsd:double .

:sourceElevation a owl:DatatypeProperty ;
    rdfs:label "source elevation" ;
    rdfs:comment "Source elevation in meters" ;
    rdfs:domain :River ;
    rdfs:range xsd:double .

:mouthElevation a owl:DatatypeProperty ;
    rdfs:label "mouth elevation" ;
    rdfs:comment "Mouth elevation in meters" ;
    rdfs:domain :River ;
    rdfs:range xsd:double .

:abstractText a owl:DatatypeProperty ;
    rdfs:label "abstract text" ;
    rdfs:comment "Descriptive text about the river" ;
    rdfs:domain :River ;
    rdfs:range xsd:string .

:otherNames a owl:DatatypeProperty ;
    rdfs:label "other names" ;
    rdfs:comment "Alternative names for the river" ;
    rdfs:domain :River ;
    rdfs:range xsd:string .