Four guys at a rollerskating rink holding on to one another.
There are people skating.
guys are people. a rollerskating rink implies skating.
exists e1 e2 s1 s2 x1 x2 x3.(a_on(s2) & Manner(e2,s2) & to(e2,x3) & n_thing(x3) & card_eq_1(x3) & a_another(s1) & Theme(s1,x3) & Actor(e2,x1) & v_hold(e2) & at(x1,x2) & n_rink(x2) & Actor(e1,x2) & v_rollerskate(e1) & n_guy(x1) & card_eq_4(x1))
exists p1 x1 e1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_skate(e1) & (x2 = x3) & n_people(x2))