A military group stands at attention.
Some nurses in white clothing have a picnic.
There can be either people having a picnic or people standing at attention.
exists e1 s1 x1 x2.(at(e1,x2) & n_attention(x2) & Actor(e1,x1) & v_stand(e1) & n_group(x1) & a_military(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & n_picnic(x3) & in(x1,x2) & n_clothing(x2) & a_white(s1) & Theme(s1,x2) & n_nurse(x1))