{number_1 => [last_name1, first_name1, middle_name1, other_stuff1],
 number_2 => [last_name2, first_name2, middle_name2, other_stuff2],
  .
  .
  .
 number_N => [last_nameN, first_nameN, middle_nameN, other_stuffN],
}
##</code><code>##

(spaces added for clarity)

{1 => [Frog,      Fuzzy,   A, other_stuff],
 2 => [Frog,      Fuzzy,    , other_stuff],
 3 => [Toad,      Zola,    Q, other_stuff],
 4 => [Frogger,   Anthony, J, other_stuff],
 5 => [Frog-Toad, Berl,    G, other_stuff]}