A boy in a black helmet jumps a bicycle with a small town visible in the background.
A boy in a helmet jumps a bicycle.
the boy is the boy and the helmet in second sentence is implied to be black
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6.(n_background(x6) & Theme(e1,x3) & Actor(e1,x1) & v_jump(e1) & with(x3,x4) & in(s3,x6) & Theme(s3,x5) & a_visible(s3) & (x4 = x5) & n_town(x4) & a_small(s2) & Theme(s2,x4) & n_bicycle(x3) & in(x1,x2) & n_helmet(x2) & a_black(s1) & Theme(s1,x2) & n_boy(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_jump(e1) & n_bicycle(x3) & in(x1,x2) & n_helmet(x2) & n_boy(x1))