You text file is one single long string. You must define separators (e.g. tabs, spaces, etc) to define word boundaries.
The attached VI shows one way to do this (LabVIEW 7.0). It first extracts the substring between "begin " and " end" and then creates an array of words. In the simplest case, all separators are the same (e.g. a single space character). In this case you can use "spreadsheet string to array" to get the words directly into a 1D array of strings (case 1).
If you have a variety of separators, you can e.g. use "scan strings for tokens" in a loop as shown (case 2).
Modify as needed.