premise: A young man, without apparent protective gear, is on a bicycle jumping over small hills of sand or gravel, with a long bridge and tall buildings in the background.
hypothesis: A young man is racing home to eat dinner.
explanation_1: Neither the speed nor the intent of the man can be inferred, one could be on a bicycle for a number of reasons besides racing home to eat dinner.
explanation_2: Not all young men on a bicycle jumping over small hills of sand or gravel are racing home to eat dinner.
explanation_3: For a man to be racing it doesn't necessarily mean his up for dinner.
premise_logic: exists p1 s1 x1 x10.(n_background(x10) & exists e1 s4 s5 s6 s7 x3 x4 x5 x6 x7 x8 x9.(on(x1,x3) & with(e1,x7) & subset_of(x9,x7) & in(x9,x10) & n_building(x9) & a_tall(s7) & Theme(s7,x9) & subset_of(x8,x7) & n_bridge(x8) & a_long(s6) & Theme(s6,x8) & a_over(s5) & Manner(e1,s5) & Theme(e1,x5) & Actor(e1,x4) & v_jump(e1) & of(x5,x6) & (n_sand(x6) | n_gravel(x6)) & n_hill(x5) & a_small(s4) & Theme(s4,x5) & (x3 = x4) & n_bicycle(x3)) & -exists s2 s3 x2.(with(x1,x2) & n_gear(x2) & a_protective(s3) & Theme(s3,x2) & a_apparent(s2) & Theme(s2,x2)) & n_man(x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 p1 s1 s2 x1 x2 x3.(Topic(e1,p1) & exists e2 x4.(Theme(e2,x4) & Actor(e2,x1) & v_eat(e2) & n_dinner(x4)) & Theme(e1,x3) & Actor(e1,x2) & v_race(e1) & n_home(x3) & n_man(x2) & a_young(s2) & Theme(s2,x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))