Display all the diseases stored in CTD database

Database: 
Statement: 
Display all the diseases stored in CTD database. A limit number of results $number$ (e.g.10)
Query: 
select ?s ?label where{ ?s a <http://bio2rdf.org/ctd_vocabulary:Disease> . ?s<http://www.w3.org/2000/01/rdf-schema#label>?label . } Limit ??number
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