A line of motorbikes in front of a store.
Bikers are outside a storefront.
Line of motorbikes imply bikers drove it there.
exists x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & in(x2,x3) & of(x3,x4) & n_store(x4) & n_front(x3) & n_motorbike(x2) & n_line(x1))
exists p1 x1.(exists x2.(outside(x1,x2) & n_storefront(x2)) & n_biker(x1))