Give me {function} that {discoverer or inventor} {Leonhard Euler} and which contains the word {function} in their name
Which is the function of the discoverer Leonhard Euler and contains the word function in it's name?
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q11348 . ?sbj wdt:P61 wd:Q7604 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'function')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
SELECT DISTINCT ?sbj ?sbj_label { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?sbj . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P31> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q11348>. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?sbj . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P61> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q7604>. ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'function')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25
Which is the feature of the discoverer Leonhard Euler and includes the phrase characteristic in it's name?