Two equestrians in and arena in riding uniforms with one leading a beautiful show horse and he other riding.
Two horsemen show off their fancy well bred horses to the foreign dignitaries.
The fact that horsemen are in an arena does not imply that the people in the arena are foreign dignitaries.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10.(a_topic(x1) & in(x1,x2) & with(e1,x5) & subset_of(x2,x5) & Time(x2,x10) & n_riding(x10) & r_other(x2) & n_male(x2) & subset_of(x6,x5) & Theme(e2,x8) & Actor(e2,x7) & v_lead(e2) & n_horse(x8) & of(x8,x9) & n_show(x9) & a_beautiful(s1) & Theme(s1,x8) & (x6 = x7) & n_thing(x6) & card_eq_1(x6) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & n_uniform(x4) & (x2 = x3) & n_arena(x2) & n_equestrian(x1) & card_eq_2(x1))
exists e1 e2 s1 s2 s3 x1 x2 x3.(n_dignitary(x3) & a_foreign(s2) & Theme(s2,x3) & a_off(s3) & Manner(e2,s3) & Theme(e2,x2) & Actor(e2,x1) & v_show(e2) & to(x2,x3) & n_horse(x2) & Theme(e1,x2) & v_breed(e1) & r_well(x2) & a_fancy(s1) & Theme(s1,x2) & of(x2,x1) & n_thing(x1) & n_horseman(x1) & card_eq_2(x1))