SQL query puzzle - List country and languages spoken

Given a table of country and language spoken,  fetch country and comma separated languages spoken list using a SQL query.

Given table example entries:

Country	Language
India	Hindi
India	Kannada
India	Tamil
China	Mandarine
China	Cantonese

 

Expected Result of SQL Query:

Country	Language_list
India	Hindi, Kannada, Tamil
China	Madarine, Cantonese

 

constraint: no further querying is allowed from supporting objects of SQL query in question. 

SELECT COUNTRY, LISTAGG(LANGUAGE, ', ') WITHIN GROUP (ORDER BY LANGUAGE) LANGUAGE_LIST FROM COUNTRY_LANGUAGE_TABLE GROUP BY COUNTRY;