A girl kisses her mother goodbye before she waits with the other children to start school.
This is mother's kids first day.
Start school can mean the beginning of the day, it doesn't have to mean it is the first day of school.
exists e1 p1 x1 x2 x3 x4.(-(x4 = x4) & n_child(x4) & exists e2 p2 x1.(Topic(e2,p2) & exists e3 x5.(Theme(e3,x5) & Actor(e3,x1) & v_start(e3) & n_school(x5)) & with(e2,x4) & Actor(e2,x1) & v_wait(e2) & n_female(x1)) & n_female(x1) & n_female(x1) & before(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_kiss(e1) & n_goodbye(x2) & of(x2,x3) & n_mother(x3) & of(x2,x1) & n_girl(x1))
exists p1 x1.(n_thing(x1) & exists s1 x2 x3 x4.((x1 = x3) & n_day(x3) & a_first(s1) & Theme(s1,x3) & of(x3,x4) & n_kid(x4) & of(x3,x2) & n_mother(x2)))