PREFIX dbo: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?Astronaut ?Astronaut_Label WHERE {
    ?Astronaut rdf:type dbo:Astronaut.
    ?Astronaut rdfs:label ?Astronaut_Label
    FILTER((LANGMATCHES(LANG(?Astronaut_Label), "en")) && (LANGMATCHES(LANG(?Astronaut_Label), "en")))
}


PREFIX dbo: <http://dbpedia.org/ontology/>
SELECT COUNT(*) {
    SELECT DISTINCT ?Astronaut ?Astronaut_Label WHERE {
        ?Astronaut rdf:type dbo:Astronaut.
        ?Astronaut rdfs:label ?Astronaut_Label
        FILTER((LANGMATCHES(LANG(?Astronaut_Label), "en")) && (LANGMATCHES(LANG(?Astronaut_Label), "en")))
    }
}


PREFIX dbo: <http://dbpedia.org/ontology/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT DISTINCT ?astronaut ?astronaut_Label ?country ?country_Label
WHERE {
    ?astronaut a dbo:Astronaut.
    ?astronaut rdfs:label ?astronaut_Label.
    ?astronaut dbo:birthPlace ?country.
    ?country a dbo:Country.
    ?country rdfs:label ?country_Label.
    FILTER((LANGMATCHES(LANG(?astronaut_Label), "en")) && (LANGMATCHES(LANG(?astronaut_Label), "en")))
    FILTER((LANGMATCHES(LANG(?country_Label), "en")) && (LANGMATCHES(LANG(?country_Label), "en")) && ((STR(?country_Label)) = "United States"))
}


PREFIX dbo: <http://dbpedia.org/ontology/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT DISTINCT
?astronaut ?astronaut_Label ?country ?country_Label ?city ?city_Label
WHERE{
    ?astronaut a dbo:Astronaut.
    ?astronaut rdfs:label ?astronaut_Label.
    ?astronaut dbo:birthPlace ?country.
    ?astronaut dbo:birthPlace ?city.
    ?country a dbo:Country.
    ?country rdfs:label ?country_Label.
    ?city a dbo:City.
    ?city rdfs:label ?city_Label.
    FILTER((LANGMATCHES(LANG(?astronaut_Label), "en")) && (LANGMATCHES(LANG(?astronaut_Label), "en")))
    FILTER((LANGMATCHES(LANG(?country_Label), "en")) && (LANGMATCHES(LANG(?country_Label), "en")) && ((STR(?country_Label)) = "United States"))
    FILTER((LANGMATCHES(LANG(?city_Label), "en")) && (LANGMATCHES(LANG(?city_Label), "en")) && (REGEX(?city_Label, "Oklahoma", "i")))
}