A riot squad making their way through a crowd.
There is a riotous crowd outside.
The fact that there is a riot squad implies that there is a riotous crowd outside.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & through(e1,x5) & n_crowd(x5) & Theme(e1,x4) & Actor(e1,x3) & v_make(e1) & n_way(x4) & of(x4,x1) & n_thing(x1) & (x1 = x3) & n_squad(x1) & of(x1,x2) & n_riot(x2))
exists p1 x1 s1 x2 x3.((x1 = x2) & n_outside(x2) & of(x2,x3) & n_crowd(x3) & a_riotous(s1) & Theme(s1,x2))