Oslofjord Tunnel
The Oslofjord Tunnel is a subsea road tunnel which traverses the Oslofjord , connecting Hurum and Frogn in Norway . 
<triplet> Oslofjord Tunnel <subj> subsea road tunnel <obj> instance of <subj> Oslofjord <obj> crosses <subj> Norway <obj> country <triplet> Frogn <subj> Norway <obj> country