Bicyclist checking to make sure that his teammate is behind him.
The bike rider is drinking a bottle of water.
You can't be checking the teammate is behind him and be drinking a bottle of water.
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 e1 x1 x2 x3 x4.(n_rider(x1) & of(x1,x2) & n_bike(x2) & Theme(e1,x3) & Actor(e1,x1) & v_drink(e1) & of(x3,x4) & n_water(x4) & n_bottle(x3))