The legs and mid-sections of two people with skateboards.
Two people posing for skateboarding
Just because two people have skateboards does not mean they are posing.
exists s1 x1 x2 x3 x4.(n_mid-section(x2) & n_leg(x1) & subset_of(x2,s1) & subset_of(x1,s1) & a_topic(s1) & of(s1,x3) & with(x3,x4) & n_skateboard(x4) & n_people(x3) & card_eq_2(x3))
exists e2 e1 x1 x2 x3.(a_topic(x1) & for(e1,e2) & Actor(e2,x3) & v_skateboard(e2) & Actor(e1,x2) & v_pose(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))