A black-haired girl is eating corn on the cob.
A girl is eating.
a girl is eating is the same as a girl is eating.
exists e1 s1 x1 x2 x3.(n_cob(x3) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & on(x2,x3) & n_corn(x2) & n_girl(x1) & a_black-haired(s1) & Theme(s1,x1))
exists e1 x1.(Actor(e1,x1) & v_eat(e1) & n_girl(x1))