premise: A group of people on the beach with cameras.
hypothesis: People are on a beach in Oregon.
explanation_1: Being on a beach does not imply one is on Oregon.
explanation_2: The group could have been on the beach on the east coast, in which case they would not be in Oregon.
explanation_3: It does not say where the beach is located; a beach can exist in Oregon or anyplace touching large bodies of water.
premise_logic: exists x1 x2 x3 x4.(n_beach(x3) & a_topic(x1) & of(x1,x2) & on(x2,x3) & with(x3,x4) & n_camera(x4) & n_people(x2) & n_group(x1))
hypothesis_logic: exists p1 x1 x3.(ne_geo_oregon(x3) & exists x2.(on(x1,x2) & in(x2,x3) & n_beach(x2)) & n_people(x1))