Enviromental factors stored in Kegg database

Database: 
Statement: 

Enviromental factors stored in Kegg database (e.g. Acacia) $label$.Display a maximum of $number$ results (e.g.100).

Query: 
select ?label where { ?s<http://www.w3.org/1999/02/22-rdf-syntax-ns#type><http://bio2rdf.org/kegg_vocabulary:Environ> . ?s<http://www.w3.org/2000/01/rdf-schema#label>?label . ?label bif:contains "??label" } Limit ??number