SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Letter_to_a_Christian_Nation> <http://dbpedia.org/ontology/author> ?x . ?x <http://dbpedia.org/property/almaMater> ?uri . }
What is the alma mater of the author of Letter to a Christian Nation?
SELECT DISTINCT ?g WHERE { resource:Letter_to_a_Christian_Nation property:author ?a . ?a property:alma_mater ?g . }
Stanford University, University of California, Los Angeles
The alma maters of the writers of Letter to a Christian Nation are [Stanford University, University of California, Los Angeles].
The alma mater of the authors of Letters from the Christian Nation is [Stanford University, University of California, Los Angeles].