After a sandstorm, a maintenance worker cleaned debris from the historic ruins.
after a snowstorm a man cleans
A maintenance worker can be either a man or women.
exists e1 s1 x1 x2 x3 x4 x5.(n_ruin(x4) & a_historic(s1) & Theme(s1,x4) & after(e1,x5) & n_sandstorm(x5) & from(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_clean(e1) & n_debris(x3) & n_worker(x1) & of(x1,x2) & n_maintenance(x2))
exists x1.(all x3 x2.((n_clean(x2) & of(x2,x3) & n_man(x3)) -> exists x4.(after(x1,x4) & for(x4,x2) & n_snowstorm(x4))) & n_event(x1))