Someone is standing holding an umbrella in a snow day.
A man standing with an umbrella on the beach.
Someone doesn't necessarily imply a man. A person would not be on the beach on a snow day.
exists e2 e1 x1 x2 x3 x4.(for(e1,e2) & in(e2,x3) & n_day(x3) & of(x3,x4) & n_snow(x4) & Theme(e2,x2) & Actor(e2,x1) & v_hold(e2) & n_umbrella(x2) & Actor(e1,x1) & v_stand(e1) & n_person(x1))
exists e1 x1 x2 x3 x4.(n_beach(x4) & a_topic(x1) & with(e1,x3) & on(x3,x4) & n_umbrella(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_man(x1))