% Logik og sprog, Modul 2, datalogi RUC      Henning Christiansen
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% DCG for simpelt engelsk *med* ental/flertal
% med oversaettelse til Mini-stak-og-variabel-maskinen
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% Afsnit 4.7.1 i "Sprog og abstrakte maskiner"
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% (c) 2000, Henning Christiansen
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sentence --> noun_phrase(Number),
             verb_phrase(Number).

noun_phrase(Number) --> determiner(Number),
                        noun(Number).

verb_phrase(Number) --> verb(Number).

verb_phrase(Number) --> verb(Number), noun_phrase(_).

determiner(_) --> [the]. % samme for begge tilfaelde

noun(singular) --> [man].
noun(plural)   --> [men].
noun(singular) --> [woman].
noun(plural)   --> [women].
noun(singular) --> [apple].
noun(plural)   --> [apples].

verb(singular) --> [eats].
verb(plural)   --> [eat].
verb(singular) --> [loves].
verb(plural)   --> [love].
verb(singular) --> [sings].
verb(plural)  -->  [sing].