A boy in a black helmet and red long-sleeve shirt rides his motorbike over a rocky stream.
A boy discovers new land while riding his motorbike.
There is no evidence that the boy discovered new land while he rides his motorbike over the stream
exists e1 s1 s2 s3 s4 x1 x2 x3 x4 x5 x6.(Theme(e1,x5) & Actor(e1,x1) & v_ride(e1) & over(x5,x6) & n_stream(x6) & a_rocky(s4) & Theme(s4,x6) & n_motorbike(x5) & of(x5,x1) & n_male(x1) & in(x1,x2) & n_shirt(x4) & a_long-sleeve(s3) & Theme(s3,x4) & a_red(s2) & Theme(s2,x4) & n_helmet(x3) & subset_of(x4,x2) & subset_of(x3,x2) & a_black(s1) & Theme(s1,x2) & n_boy(x1))
exists e1 e2 s1 x1 x2 x3.(while(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_ride(e2) & n_motorbike(x3) & of(x3,x1) & n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_discover(e1) & n_land(x2) & a_new(s1) & Theme(s1,x2) & n_boy(x1))