An older woman shows a younger male child a reptilian animal while a young girl sits in the background.
A naturalist shows a young boy a reptile she found during a nature walk.
The woman is not necessarily a naturalist. Just because she has a reptile does not mean she found it during a nature walk.
exists s1 x1 x5.(n_background(x5) & all s2 x2.((n_animal(x2) & a_reptilian(s2) & Theme(s2,x2)) -> exists e1 p1 s3 s4 x3.(exists e2 s5 x4.(in(e2,x5) & Actor(e2,x4) & v_sit(e2) & n_girl(x4) & a_young(s5) & Theme(s5,x4)) & while(e1,p1) & Theme(e1,x3) & Actor(e1,x1) & v_show(e1) & for(x3,x2) & n_child(x3) & a_male(s4) & Theme(s4,x3) & r_more(s3) & a_younger(s3) & Theme(s3,x3))) & n_woman(x1) & r_more(s1) & a_older(s1) & Theme(s1,x1))
exists x1.(all x2.(n_reptile(x2) -> exists e1 e2 s1 x3 x4 x5 x6.(Theme(e2,x3) & Actor(e2,x1) & v_show(e2) & during(e1,x5) & Time(x5,x6) & n_walk(x6) & n_nature(x5) & Theme(e1,x4) & Actor(e1,x1) & v_find(e1) & (x3 = x4) & for(x3,x2) & n_boy(x3) & a_young(s1) & Theme(s1,x3))) & n_female(x1) & n_naturalist(x1))