Bicyclist checking to make sure that his teammate is behind him.
The other rider is his brother.
Sentence 1: Bicyclist checking to make sure that his teammate is behind him. Sentence 2: The other rider is his brother.
exists e1 p1 x1 x2.(n_male(x1) & n_male(x1) & n_teammate(x2) & of(x2,x1) & ne_nam_bicyclist(x1) & Topic(e1,p1) & Actor(e1,x1) & v_check(e1) & exists e2 p2.(exists e3 p3.(Topic(e3,p3) & Actor(e3,x1) & v_sure(e3) & exists p4.behind(x2,x1)) & Topic(e2,p2) & Actor(e2,x1) & v_make(e2)))
exists p1 x1 x2 x3.(n_brother(x3) & of(x3,x2) & n_male(x2) & -(x1 = x1) & n_rider(x1) & (x1 = x3))