Two bikers, one with a mask, pose in the street with their bikes.
Two bikers posing.
The phrase "pose in the street with their bikes" is the act of "posing".
exists e1 x1 x2 x3 x4 x5.(n_street(x4) & n_bike(x5) & of(x5,x4) & n_thing(x4) & in(e1,x4) & with(e1,x5) & Actor(e1,x1) & v_pose(e1) & rel(x1,x2) & with(x2,x3) & n_mask(x3) & n_thing(x2) & card_eq_1(x2) & n_biker(x1) & card_eq_2(x1))
exists e1 x1.(Actor(e1,x1) & v_pose(e1) & n_biker(x1) & card_eq_2(x1))