A long-haired lady performs in an equestrian event by the sea side.
The lady is singing.
One can't automatically infer that the lady is singing just because she performs.
exists e1 s1 s2 x1 x2 x3 x4.(n_side(x3) & of(x3,x4) & n_sea(x4) & by(e1,x3) & in(e1,x2) & n_event(x2) & a_equestrian(s2) & Theme(s2,x2) & Actor(e1,x1) & v_perform(e1) & n_lady(x1) & a_long-haired(s1) & Theme(s1,x1))
exists e1 x1.(n_lady(x1) & Actor(e1,x1) & v_sing(e1))