What is the {taxon} for {this taxon is source of} of {watermelon}
What is the source of taxon in watermelon
 select distinct ?sbj where { ?sbj wdt:P1672 wd:Q38645 . ?sbj wdt:P31 wd:Q16521 } 
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1672> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q38645> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q16521> } 
In watermelon, where do taxons originate from?