A person on a surfboard with a paddle in a lake while two other people follow close behind in a boat.
Nobody is paddling the water.
There cannot be three people and nobody as it implies there is no one there.
exists e1 p1 s1 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10.(n_people(x8) & a_topic(x1) & on(x1,x2) & with(x2,x3) & in(x3,x4) & in(s1,x10) & n_boat(x10) & Theme(s1,x6) & Pivot(s1,x5) & a_behind(s1) & exists s2.(Theme(s2,x9) & a_close(s2)) & Recipient(e1,p1) & Actor(e1,x7) & Topic(e1,x9) & v_follow(e1) & (x6 = x9) & -(x7 = x8) & n_people(x7) & n_thing(x6) & card_eq_2(x6) & (x4 = x5) & n_lake(x4) & n_paddle(x3) & n_surfboard(x2) & n_person(x1))
exists x2.(n_water(x2) & -exists e1 x1.(Theme(e1,x2) & Actor(e1,x1) & v_paddle(e1) & n_person(x1)))