;;; Lexicon
this := sg-word &
[ ORTH [ LIST [ FIRST  "this" ]],
  CATEG det ].

these := pl-word &
[ ORTH [ LIST [ FIRST  "these"]],
  CATEG det ].

the := word &
[ ORTH [ LIST [ FIRST  "the"]],
  CATEG det ].

sleep := pl-word &
[ ORTH [ LIST [ FIRST  "sleep"]],
  CATEG vp ].

sleeps := sg-word &
[ ORTH [ LIST [ FIRST  "sleeps"]],
  CATEG vp ].

dog := sg-word &
[ ORTH [ LIST [ FIRST  "dog"]],
  CATEG n ].

dogs := pl-word &
[ ORTH [ LIST [ FIRST  "dogs"]],
  CATEG n ].

sheep := word &
[ ORTH [ LIST [ FIRST  "sheep"]],
  CATEG n ].

slept := word &
[ ORTH [ LIST [ FIRST  "slept"]],
  CATEG vp ].