Crowd of people watch as woman wearing a black helmet and man in a aqua shirt fight.
A group of people watch boxers.
Just because a crowd of people watch as woman wearing a black helmet and man in a aqua shirt fight doesn't mean that the people fighting are boxers.  Non-professional fighter can get into a fight and there are other professional fighters besides boxers.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10.(Theme(e2,x3) & Actor(e2,x1) & v_watch(e2) & in(e1,x8) & n_fight(x8) & of(x8,x10) & n_shirt(x10) & of(x8,x9) & n_aqua(x9) & Theme(e1,x5) & Actor(e1,x4) & v_wear(e1) & n_man(x7) & n_helmet(x6) & subset_of(x7,x5) & subset_of(x6,x5) & a_black(s2) & Theme(s2,x5) & (x3 = x4) & n_woman(x3) & a_as(s1) & Theme(s1,x3) & of(x1,x2) & n_people(x2) & n_crowd(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_watch(e1) & n_boxer(x3) & of(x1,x2) & n_people(x2) & n_group(x1))