One man is riding a dirt bike while wearing a red and white protective suit and helmet.
A man on a dirt bike properly dressed for riding on one.
A helmet and red and white protective suit does not necessarily mean, properly dressed.
exists e1 e2 s1 s2 s3 x1 x2 x3 x4 x5 x6.(while(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_wear(e2) & n_helmet(x6) & n_suit(x5) & subset_of(x6,x4) & subset_of(x5,x4) & a_protective(s3) & Theme(s3,x4) & a_white(s2) & Theme(s2,x4) & a_red(s1) & Theme(s1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & of(x2,x3) & n_dirt(x3) & n_man(x1) & card_eq_1(x1))
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & on(x1,x2) & a_properly(s1) & Manner(e1,s1) & for(e1,e2) & on(e2,x6) & n_thing(x6) & card_eq_1(x6) & Actor(e2,x5) & v_ride(e2) & Theme(e1,x4) & v_dress(e1) & (x2 = x4) & n_bike(x2) & of(x2,x3) & n_dirt(x3) & n_man(x1))