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[
  {
    name: { first: 'Alice', last: 'Smith' },
    age: 30,
    contact: { email: 'alice@example.com' },
  },
  {
    name: { first: 'Bob', last: 'Jones' },
    age: 25,
    contact: { phone: '555-123-4567' },
  },
  {
    name: { first: 'Carol', last: 'White' },
    age: 42,
    contact: { email: 'carol@example.com', phone: '123-456-7890' },
  },
]