Bicyclist riding on a grass field, wearing a red and yellow uniform, shades, and a helmet.
Someone is bicycling in a marathon.
Riding on a grass field does not necessarily mean in a marathon.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10.(a_topic(x1) & on(x1,x3) & subset_of(x6,x3) & subset_of(x10,x6) & n_helmet(x10) & subset_of(e1,x6) & rel(e1,x9) & n_shades(x9) & Theme(e1,x8) & Actor(e1,x7) & v_wear(e1) & n_uniform(x8) & a_yellow(s2) & Theme(s2,x8) & a_red(s1) & Theme(s1,x8) & n_thing(x7) & subset_of(x4,x3) & n_field(x4) & of(x4,x5) & n_grass(x5) & n_riding(x1) & of(x1,x2) & n_bicyclist(x2))
exists e1 x1 x2.(in(e1,x2) & n_marathon(x2) & Actor(e1,x1) & v_bicycle(e1) & n_person(x1))