premise: Four small children playing in the courtyard of a large building made out of clay or sand.
hypothesis: Four children are outdoors playing.
explanation_1: Small children are playing in an outdoors courtyard.
explanation_2: Children are typically small so the four children in sentence two are the same as the children in sentence one.  A courtyard is always outside.
explanation_3: A courtyard is outdoors.
premise_logic: exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6.(n_courtyard(x3) & a_topic(x1) & in(e1,x3) & of(x3,x4) & r_out(e2) & of(e2,x6) & (n_clay(x6) | n_sand(x6)) & Theme(e2,x5) & v_make(e2) & (x4 = x5) & n_building(x4) & a_large(s2) & Theme(s2,x4) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_child(x1) & a_small(s1) & Theme(s1,x1) & card_eq_4(x1))
hypothesis_logic: exists p1 x1.(exists e1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_play(e1) & (x2 = x3) & n_outdoors(x2)) & n_child(x1) & card_eq_4(x1))