Little kids are lined up to race in a tricycle race.
The kids are about to race.
Tricycle race is a kind of races
exists e1 s1 s2 x1 x2 x3 x4.(in(e1,x3) & n_race(x3) & of(x3,x4) & n_tricycle(x4) & a_up(s2) & Manner(e1,s2) & to(e1,x2) & n_race(x2) & Theme(e1,x1) & v_line(e1) & n_kid(x1) & a_little(s1) & Theme(s1,x1))
exists p1 s1 x1.(n_kid(x1) & a_about(s1) & Manner(p1,s1) & exists x2.(to(x1,x2) & n_race(x2)))