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(The string ARTICLE followed by a space, followed by a digit, followed by a space, followed by an em dash, followed by a space, followed by any number of words, then a newline. An example is "ARTICLE 5 – DESCRIPTION...")
(An integer, followed by a period, followed by another integer with an optional period and integer, followed by any text, and a newline. An example is "2.1.3 Subsection 2...")