premise: a young boy using a field microscope to identify a field specimen during a field trip.
hypothesis: The young girl looks through the telescope.
explanation_1: Boy refers to a male while a girl refers to a female.
explanation_2: It is either a young girl or a young boy.
explanation_3: The person cannot be both a boy and a girl.  They must either use a telescope or a microscope.
premise_logic: exists e1 p1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,p1) & Recipient(e1,x3) & Actor(e1,x2) & v_use(e1) & exists e2 x5 x6 x7 x8.(during(e2,x7) & n_trip(x7) & of(x7,x8) & n_field(x8) & Theme(e2,x5) & Actor(e2,x2) & v_identify(e2) & n_specimen(x5) & of(x5,x6) & n_field(x6)) & n_microscope(x3) & of(x3,x4) & n_field(x4) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 s1 x1 x2.(n_telescope(x2) & n_girl(x1) & a_young(s1) & Theme(s1,x1) & through(e1,x2) & Actor(e1,x1) & v_look(e1))