Experiments including a description

Statement: 
Get experiments where the sample description contains $name$ (i.e. diabetes). Limit the number of results to $number$
Query: 
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX owl: <http://www.w3.org/2002/07/owl#> PREFIX dcterms: <http://purl.org/dc/terms/> PREFIX obo: <http://purl.obolibrary.org/obo/> PREFIX sio: <http://semanticscience.org/resource/> PREFIX efo: <http://www.ebi.ac.uk/efo/> PREFIX atlas: <http://rdf.ebi.ac.uk/resource/atlas/> PREFIX atlasterms: <http://rdf.ebi.ac.uk/terms/atlas/> SELECT DISTINCT ?experiment ?description WHERE {?experiment a atlasterms:Experiment ; dcterms:description ?description ; atlasterms:hasAssay [atlasterms:hasSample [atlasterms:hasSampleCharacteristic [ atlasterms:propertyType ?propertyType ; atlasterms:propertyValue ?propertyValue] ] ] filter regex (?description, "??name", "i") } limit ??number