SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/type> <http://dbpedia.org/resource/Non-governmental_organization> . ?x <http://dbpedia.org/property/purpose> ?uri . }
What do typically NGOs work for?
SELECT DISTINCT ?a WHERE { ?a property:purpose ?a . . ?a property:type resource:Non-governmental_organization }
answer
The purpose of Non-governmental organization are [answer].
The aim of non-governmental organizations is [answer].