A group of young males stand together with their mouths open.
There are a group of males
There is a group of males because a group of males stand together.
exists e1 p1 s1 s2 x1 x2 x3 x4.(with(e1,x3) & Theme(s2,x4) & a_open(s2) & (x3 = x4) & n_mouth(x3) & of(x3,x1) & n_thing(x1) & exists s3.(Theme(s3,x1) & a_together(s3)) & Topic(e1,p1) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_male(x2) & a_young(s1) & Theme(s1,x2) & n_group(x1))
exists p1 x1 x2 x3.((x1 = x2) & of(x2,x3) & n_male(x3) & n_group(x2))