Two boys in blue shirts are in front of a gray car.
A mechanic working on a car.
Two is more than one as A suggests there is only one mechanic. Boys are not mechanics.
exists p1 s1 x1 x2.(exists s2 x3 x4.(in(x1,x3) & of(x3,x4) & n_car(x4) & a_gray(s2) & Theme(s2,x4) & n_front(x3)) & in(x1,x2) & n_shirt(x2) & a_blue(s1) & Theme(s1,x2) & n_boy(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_car(x3) & Actor(e1,x2) & v_working(e1) & (x1 = x2) & n_mechanic(x1))