A man chiseling or carving in a cement block.
A man and women are destroying a block of cement.
One can not be carving and destroying simultaneously.
exists x1.(a_topic(x1) & (exists e1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x2) & v_chisel(e1) & n_block(x3) & of(x3,x4) & n_cement(x4) & (x1 = x2)) | exists e2 x5 x6 x7.(in(e2,x6) & n_block(x6) & of(x6,x7) & n_cement(x7) & Actor(e2,x5) & v_carve(e2) & (x1 = x5))) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x4) & Actor(e1,x1) & v_destroy(e1) & of(x4,x5) & n_cement(x5) & n_block(x4) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))