A guy is doing a trick on a bike.
A grand master reviews strategy previously favored by his upcoming opponent.
A guy may or may not be a grand master. Doing a trick and reviews strategy are different types of activities.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & on(x2,x3) & n_bike(x3) & n_trick(x2) & n_guy(x1))
exists e1 s1 s2 s3 x1 x2 x3 x4 x5.(a_topic(x1) & a_previously(s3) & Manner(e1,s3) & Actor(e1,x5) & n_opponent(x5) & a_upcoming(s2) & Theme(s2,x5) & of(x5,x1) & n_male(x1) & Theme(e1,x4) & v_favor(e1) & (x1 = x4) & n_strategy(x1) & of(x1,x3) & n_review(x3) & of(x1,x2) & n_master(x2) & a_grand(s1) & Theme(s1,x1))