A person driving a go-kart turning to his or her left.
Someone is driving.
Someone is a person, and that person is turning in a go-kart, so they are driving.
exists x1 x2 x6.(a_topic(x1) & (exists e1 s1 x3 x4 x5.(Theme(e1,x3) & Actor(e1,x2) & v_drive(e1) & n_left(x3) & to(x3,x5) & n_his(x5) & of(x3,x4) & n_turning(x4) & a_go-kart(s1) & Theme(s1,x3)) | exists e2.(Theme(e2,x6) & Actor(e2,x2) & v_drive(e2))) & n_left(x6) & of(x6,x1) & n_female(x1) & (x1 = x2) & n_person(x1))
exists e1 x1.(Actor(e1,x1) & v_drive(e1) & n_person(x1))