A man in a red helmet holds a bullhorn.
The man who was wearing a red firefighting helmet was also holding a bullhorn full of water.
Not all red helmets are firefighting helmets and there is no indication that the bullhorn is full of water.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_hold(e1) & n_bullhorn(x3) & in(x1,x2) & n_helmet(x2) & a_red(s1) & Theme(s1,x2) & n_man(x1))
exists e2 e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(n_man(x1) & a_also(s3) & Manner(e2,s3) & Theme(e2,x5) & Actor(e2,x1) & v_hold(e2) & of(s2,x7) & n_water(x7) & Theme(s2,x6) & a_full(s2) & (x5 = x6) & n_bullhorn(x5) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_helmet(x3) & of(x3,x4) & n_firefighting(x4) & a_red(s1) & Theme(s1,x3) & (x1 = x2))