This file is indexed.

/usr/share/link-grammar/lt/4.0.knowledge is in link-grammar-dictionaries-lt 4.7.4-2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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; Post-processing knowledge file
; 6/96

; ----------------------------------------------------------------------------
; This file contains the knowledge related to post-processing, in the 
; form of lists and rules. This file is read by post-process.c at run-time. 
; Syntax of file:
;           line starting with ";" is a comment
;           commas are field delimiters 
;           any token beginning with the character @ is expanded to the set
;               of symbols it defined. e.g. one could write
; FOO: blah1 blah2 blah3
; thus defining a set FOO containing three strings. Then one could later write
; BAR: blah5 @FOO blah8
; which defines a set BAR containing 5 strings. 
; 
; Capitalized tokens are *required*, though if you feel like providing an
; empty list afterwards, that's your right.
; ----------------------------------------------------------------------------


; the following links start a domain. Each must be given a name in the
; table below (STARTING_LINK_TYPE_TABLE)
  
DOMAIN_STARTER_LINKS: 
 W   


; ----------------------------------------------------------------------
; ---------------------- LINK TYPE TABLE-------------------------------
; ----------------------------------------------------------------------
; the following table associates a domain type with each possible
; starting link. It contains pairs: the first of each pair is a link
; type, and the second is the domain to which that link type belongs.

STARTING_LINK_TYPE_TABLE: 
 W     m