Several Asian children walking with two teachers.
The children are walking alone.
They would either be walking alone or with two teachers not both at the same time.
exists e1 s1 s2 x1 x2 x3.(a_topic(x1) & with(e1,x3) & n_teacher(x3) & card_eq_2(x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_child(x1) & a_asian(s2) & Theme(s2,x1) & a_several(s1) & Theme(s1,x1))
exists e1 s1 x1.(n_child(x1) & a_alone(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1))