A crowd is protesting with signs.
A crowd holds signs during a protest
The crowd is protesting with signs so the signs are part of the protest and must be held at the same time
exists e1 x1 x2.(with(e1,x2) & n_sign(x2) & Actor(e1,x1) & v_protest(e1) & n_crowd(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & during(x2,x3) & n_protest(x3) & n_sign(x2) & n_crowd(x1))