The man is attempting wheelie on hi moped in front of his fascinated family.
The man pulls off a wheelie
The first sentence ways the man was attempting, second sentence explains he pulls off a wheelie
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(n_family(x6) & a_fascinated(s1) & Theme(s1,x6) & of(x6,x1) & n_male(x1) & n_man(x1) & on(e1,x3) & in(e2,x5) & of(x5,x6) & n_front(x5) & Theme(e2,x4) & v_mope(e2) & (x3 = x4) & n_hus(x3) & Theme(e1,x2) & Actor(e1,x1) & v_attempt(e1) & n_wheelie(x2))
exists e1 s1 x1 x2.(n_man(x1) & a_off(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_pull(e1) & n_wheelie(x2))