what is the {start time} for {Muhammad Ali} has {religion} as {Sunni Islam} ?
Muhammad Ali's conversion to Sunni Islam took place when?
When did Muhammad Ali convert to Sunni Islam?
SELECT ?v WHERE { resource:Muhammad_Ali property:religion ?x . ?x property:start_time ?v . ?x property:religion resource:Sunni_Islam }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q36107> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P140> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q483654> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q36107 p:P140 ?s . ?s ps:P140 wd:Q483654 . ?s pq:P580 ?value}