{
  :sid => "S1",
  :name => "Smith",
  :status => 20,
  :city => "London"
}
{
  :sid => "S2",
  :name => "Jones",
  :status => 10,
  :city => "Paris"
}
{
  :sid => "S3",
  :name => "Blake",
  :status => 30,
  :city => "Paris"
}
{
  :sid => "S4",
  :name => "Clark",
  :status => 20,
  :city => "London"
}
{
  :sid => "S5",
  :name => "Adams",
  :status => 30,
  :city => "Athens"
}