Following is a demo of the imaginary_friends.pl program.
joanne has an imaginary friend moose, who they went on an adventure with in a circus.
lou has an imaginary friend grizzly_bear, who they went on an adventure with in a train.
ralph has an imaginary friend seal, who they went on an adventure with in a rock_band.
winnie has an imaginary friend zebra, who they went on an adventure with in a spaceship.