A man joins the Canadian military for a ceremony.
A man joins the US army in a ceremony.
Canadian and US are two different nationalities
exists e1 s1 x1 x2 x3.(n_military(x2) & a_canadian(s1) & Theme(s1,x2) & Theme(e1,x2) & Actor(e1,x1) & v_join(e1) & for(x2,x3) & n_ceremony(x3) & n_man(x1))
exists e1 x1 x2 x3 x4.(n_army(x2) & (x2 = x3) & ne_org_us(x3) & Theme(e1,x2) & Actor(e1,x1) & v_join(e1) & in(x2,x4) & n_ceremony(x4) & n_man(x1))