query {
  a: personByEmail(email: "sara.smith@email.com") {
    name
    email
  }
  b: personByEmail(email: "does.not.exist@email.com") {
    name
    email
  }
  c: compoundKeyByPersonId1AndPersonId2(personId1: 1, personId2: 2) {
    personId1
    personId2
  }
  d: compoundKeyByPersonId1AndPersonId2(personId1: 4, personId2: 4) {
    personId1
    personId2
  }
  e: compoundKeyByPersonId1AndPersonId2(personId1: 1, personId2: 100) {
    personId1
    personId2
  }
}