[erlang-questions] Question on pattern matching from Joe's book

[Prakash Swaminathan]

On page 43 of the pdf book, under section 2.12 "Pattern Matching
again", the second-to-last example: [H T] "cat" Succeeds H ->99, T
->"at".

Why is the value assigned to T-> "at" and not "97116"?

thanks,
--Prakash