How many groups have fought in wars where Richard Taylor fought too?
SELECT DISTINCT COUNT(?uri) WHERE { <http://dbpedia.org/resource/Richard_Taylor_(colonel)> <http://dbpedia.org/property/battles> ?x . ?x <http://dbpedia.org/property/combatant> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/MilitaryConflict>}
Richard_Taylor_(colonel)