premise: A girl in black pants doing exercises.
hypothesis: A girl moving her muscles to get exercise in.
explanation_1: Doing exercise implies moving your muscles.
explanation_2: Moving her muscles signifies the girl is doing exercises.
explanation_3: To perform exercises a person must be moving their muscles.
premise_logic: exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & n_exercise(x4) & (x2 = x3) & n_pants(x2) & a_black(s1) & Theme(s1,x2) & n_girl(x1))
hypothesis_logic: exists e1 p1 x1 x2 x3 x4.(a_topic(x1) & Topic(e1,p1) & exists e2 s1 x5.(a_in(s1) & Manner(e2,s1) & Theme(e2,x5) & Actor(e2,x2) & v_get(e2) & n_exercise(x5)) & Theme(e1,x4) & Actor(e1,x3) & v_move(e1) & n_muscle(x4) & of(x4,x1) & n_female(x1) & (x1 = x3) & (x1 = x2) & n_girl(x1))