<http://schema.org/target>
"http://www.firebox.com/firebox/search?searchstring={search_term_string}"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.firebox.com/Space-Invaders-Alarm-Clock/p2257?itc=188&src_id=269&src_t=nwt&via=main>