What is the fine-grained topic of the following text: John Macdonald, 16 Kirkibost; John C. Mackenzie, R.N.R., 18 Kirkibost; Second hand Norman Macdonald, R.N.R., 24 Kirkibost; Second Hand Callum Murdo Macdonald, R.N.R., 24 Kirkibost; Donald Mackay, Merchant Navy, 22 Valasay; Angus Macdonald, R.N.R., 22 Valasay; Donald G. Mackenzie, R.N.R., 5 Hacklete; Staff-Sergt. Only return the topic.
Residents or named individuals from specific addresses, possibly in the Navy or Merchant Navy.