A man in an Easter Bunny costume is handing out candy to children.
The man is dressed for Halloween.
People can wear animal costumes for many sorts of occasions, not just Halloween.  In particular Easter Bunny costumes are usually worn around Easter, in the spring.
exists e1 s1 x1 x2 x3 x4 x5 x6.(a_out(s1) & Manner(e1,s1) & Theme(e1,x5) & Actor(e1,x1) & v_hand(e1) & to(x5,x6) & n_child(x6) & n_candy(x5) & in(x1,x2) & n_costume(x2) & (x2 = x4) & ne_geo_bunny(x4) & (x2 = x3) & ne_geo_easter(x3) & n_man(x1))
exists e1 x1 x2.(ne_org_halloween(x2) & n_man(x1) & for(e1,x2) & Theme(e1,x1) & v_dress(e1))