A group of girls are standing with rollerblades on while a man is lifting his leg next to them.
the girls are weightlifters.
Girls are standing with rollerblades in sentence 1; although they could be weight lifters they are not actively performing the action of weight lifting. The contradiction is the girls are standing in rollerblades while man is the one lifting and although girls could be weight lifters they are not actively doing so.
exists e1 p1 s1 x1 x2 x3 x5.(exists e2 x4 x6.(Theme(e2,x5) & Actor(e2,x4) & v_lift(e2) & to(x6,x1) & next(x5,x6) & n_thing(x6) & n_man(x4)) & n_thing(x1) & n_leg(x5) & of(x5,x1) & n_male(x1) & while(e1,p1) & a_on(s1) & Manner(e1,s1) & with(e1,x3) & n_rollerblade(x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_girl(x2) & n_group(x1))
exists p1 x1.(n_girl(x1) & exists x2.((x1 = x2) & n_weightlifter(x2)))