DanC: by connolly on Mon, 2006-01-23
http://www.sparql.org/validator?query=PREFIX+ical%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F2002%2F12%2Fcal%2Ficaltzd%23%3E%0D%0A%0D%0ASELECT+url1%0D%0A%0D%0AFROM+%3Chttp%3A%2F%2Fwww.w3.org%2F2001%2Fsw%2Fgrddl-wg%2Fdoc29%2Fjaneschedule.rdf%3E%0D%0AFROM+%3Chttp%3A%2F%2Fwww.w3.org%2F2001%2Fsw%2Fgrddl-wg%2Fdoc29%2Frobin-hcal-grddl.rdf%3E%0D%0AFROM+%3Chttp%3A%2F%2Fwww.w3.org%2F2001%2Fsw%2Fgrddl-wg%2Fdoc29%2Fdavid-erdf.rdf%3E%0D%0A%0D%0AWHERE%0D%0A+