- Which exhibits are located in UoAMuseumRoomA1?
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX geonames: <http://www.geonames.org/ontology#>
PREFIX :<http://i-lab.aegean.gr/kotis/Ontologies/Meso/Meso.owl#>
SELECT ?x 
WHERE { 
?x  geonames:locatedIn :UoAMuseumRoomA1
}

- How many sensors (all kinds) are hosted by IoTmuseumPlatformLG?
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX geonames: <http://www.geonames.org/ontology#>
PREFIX sosa:<http://www.w3.org/ns/sosa/>
PREFIX :<http://i-lab.aegean.gr/kotis/Ontologies/Meso/Meso.owl#>
SELECT (COUNT(?x) AS ?numOfSensors)
WHERE {
:IoTmuseumPlatformLG sosa:hosts ?x
}

- Which rooms have been visited  by Visitor01 visited?
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX geonames: <http://www.geonames.org/ontology#>
PREFIX sosa:<http://www.w3.org/ns/sosa/>
PREFIX :<http://i-lab.aegean.gr/kotis/Ontologies/Meso/Meso.owl#>
SELECT ?x 
WHERE { 
:Visitor01 :visits ?x
}

- What temperature measurements have been made in UoAMuseumRoomA1 between 09.00 and 17.00 on 07/12/2020?

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX geonames: <http://www.geonames.org/ontology#>
PREFIX sosa:<http://www.w3.org/ns/sosa/>
PREFIX :<http://i-lab.aegean.gr/kotis/Ontologies/Meso/Meso.owl#>
SELECT ?Observations
WHERE {
?Observations sosa:hasFeatureOfInterest :UoAMuseumRoomA1.
?Observations sosa:resultTime ?resultTime 
FILTER(?resultTime>="2020-12-07T09:00:12Z"^^xsd:dateTime && ?resultTime <="2020-12-07T17:00:12Z"^^xsd:dateTime).
}

- For observations that are made for Painting01 (in UoAMuseumRoomA1) at 09.00, 15/01/2021, what is its status in terms of its lamp brightness level and nearby visitors?

PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX sosa:<http://www.w3.org/ns/sosa/>
PREFIX :<http://i-lab.aegean.gr/kotis/Ontologies/Meso/Meso.owl#>
SELECT ?observation ?numberofvisitors ?brighteness 
WHERE {
?observation sosa:hasFeatureOfInterest :Painting01.		
?observation :nearByVisitors ?numberofvisitors.
?observation :brighteningLevel ?brighteness.
?observation sosa:resultTime ?resultTime.
FILTER(?resultTime="2021-01-15T09:00:12Z"^^xsd:dateTime)
}