a "The Human Shop" display in a public area such as a mall or airport, with four people, 3 females and one male, all wearing black with chains around their wrists, two of the females are sitting and the other with the male are standing, with a green sign in white lettering explaining what it is on the top and bottom for more information.
The people are friends with eachother.
Sentence 1 is missing friends with each other
(-x)
exists p1 x1 x2.(n_people(x1) & with(p1,x2) & n_eachother(x2) & exists x3.((x1 = x3) & n_friend(x3)))