p1: Daphne Snickerdoodle {
  shape: person
}
p2: Prudence McSnortle {
  shape: person
}
p3: Polly Pizzazzle {
  shape: person
}
p1 -> p3
p2 -> p3
p1 -> p3
p2 -> p3
p3 -> p2
p3 -> p1