SPARQL player

Sparql Query:

Example query:

PREFIX foaf: <http://xmlns.com/foaf/0.1/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX dc: <http://purl.org/dc/elements/1.1/>

SELECT ?name ?email
WHERE {
?person foaf:name ?name .
OPTIONAL
{ ?person foaf:mbox ?email . }
}