A child that is dressed as Spiderman is ringing the doorbell.
A boy dressed as Spiderman is going to a themed birthday party.
It's not known that the child was a boy, nor that said child was going to a themed birthday party.
exists e1 e2 x1 x2 x3 x4.(n_doorbell(x4) & ne_org_spiderman(x3) & Theme(e2,x4) & Actor(e2,x1) & v_ring(e2) & as(e1,x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_child(x1))
exists e3 e1 e2 x1 x2 x3 x4 x5.(ne_org_spiderman(x3) & to(e2,x4) & n_party(x4) & of(x4,x5) & n_birthday(x5) & Theme(e3,x4) & v_theme(e3) & Actor(e2,x1) & v_go(e2) & as(e1,x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_boy(x1))