A solemn group is on strike.
A group is striking.
we have the rephrasing of words as a group is on strrike
exists p1 s1 x1.(exists x2.(on(x1,x2) & n_strike(x2)) & n_group(x1) & a_solemn(s1) & Theme(s1,x1))
exists s1 x1.(Theme(s1,x1) & a_striking(s1) & n_group(x1))