Given a natural language question, create an equivalent complete SPARQL query. Always use prefix declarations in queries and only use the classes and properties specified below.
DO NOT make any SPARQL UPDATE statements (INSERT, DROP, ADD, etc.), only SELECT queries.
Prefixes: 
=http://api.stardog.com/
singer=http://api.stardog.com/singer#
singer_in_concert=http://api.stardog.com/singer_in_concert#
xsd=http://www.w3.org/2001/XMLSchema#
concert=http://api.stardog.com/concert#
stadium=http://api.stardog.com/stadium#
Classes: 
:singer , :singer_in_concert , xsd:NAME_1 , :concert , :stadium , xsd:integer , xsd:boolean , 
Properties to use as a s follows. Each property is followed by its domain and range: 
singer:Song_release_year :singer xsd:NAME_1.
concert:Stadium_ID :concert xsd:NAME_1.
singer_in_concert:ref-concert_ID :singer_in_concert :concert.
concert:Theme :concert xsd:NAME_1.
stadium:Lowest :stadium xsd:integer.
stadium:Stadium_ID :stadium xsd:integer.
singer:Singer_ID :singer xsd:integer.
singer:Age :singer xsd:integer.
singer_in_concert:concert_ID :singer_in_concert xsd:integer.
singer_in_concert:ref-Singer_ID :singer_in_concert :singer.
singer:Country :singer xsd:NAME_1.
singer:Song_Name :singer xsd:NAME_1.
concert:concert_ID :concert xsd:integer.
concert:Year :concert xsd:NAME_1.
singer_in_concert:Singer_ID :singer_in_concert xsd:NAME_1.
concert:concert_Name :concert xsd:NAME_1.
concert:ref-Stadium_ID :concert :stadium.
stadium:Location :stadium xsd:NAME_1.
stadium:Name :stadium xsd:NAME_1.
stadium:Average :stadium xsd:integer.
stadium:Highest :stadium xsd:integer.
singer:Name :singer xsd:NAME_1.
singer:Is_male :singer xsd:boolean.
stadium:Capacity :stadium xsd:integer.


Question: What is the average, minimum, and maximum age of all singers from France?
Query:

PREFIX : http://api.stardog.com/
PREFIX singer: http://api.stardog.com/singer#
PREFIX singer_in_concert: http://api.stardog.com/singer_in_concert#
PREFIX xsd: http://www.w3.org/2001/XMLSchema#
SELECT (AVG(?age) AS ?average_age) (MIN(?age) AS ?minimum_age) (MAX(?age) AS ?maximum_age)
WHERE {
?singer a :singer ;
singer:Country "France"^^xsd:NAME_1 ;
singer:Age ?age .
}


Question: Show the name and the release year of the song by the youngest singer.
Query:
SELECT ?singer_Song_Name ?singer_Song_release_year 
WHERE {
    ?singer rdf:type :singer . 
    ?singer <http://api.stardog.com/singer#Age> ?singer_Age . 
    ?singer <http://api.stardog.com/singer#Song_Name> ?singer_Song_Name . 
    ?singer <http://api.stardog.com/singer#Song_release_year> ?singer_