Four cheerleaders are walking in a straight line on the football field.
The cheerleaders are in a line.
If people are in a line then they are in a straight line
exists e1 s1 x1 x2 x3 x4.(n_field(x3) & of(x3,x4) & n_football(x4) & on(e1,x3) & in(e1,x2) & n_line(x2) & a_straight(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1) & n_cheerleader(x1) & card_eq_4(x1))
exists p1 x1.(n_cheerleader(x1) & exists x2.(in(x1,x2) & n_line(x2)))