-- Sep 15 In-Class Exercise Thread

     sentence
         |

    |           |

  |      |    |        |
  a     dog  pets    article noun
                       |      |
                       a    girl

sentence -> noun-phrase verb-phrase -> article noun verb-phrase -> a noun verb-phrase -> a dog verb-phrase -> a dog verb noun-phrase -> a dog pets noun-phrase -> a dog pets article noun -> a dog pets a noun -> a dog pets a girl sentence | noun-phrase verb-phrase | | article noun verb noun-phrase | | | | a dog pets article noun | | a girl

-- Sep 15 In-Class Exercise Thread

                     -> <start of sentence><article><noun><verb phrase>
                     -> a <noun><verb phrase>
                     -> a dog <verb phrase>
                     -> a dog <verb><noun phrase>
                     -> a dog sees <article><noun>
                     -> a dog sees a <noun>
                     -> a dog sees a girl

    |

    |             |

    |     |       |        |
    a    dog     sees   article noun
                           |     |
                           a    girl

<Sentence> ::= <noun phrase><verb phrase> <Sentence> -> <start of sentence><noun phrase><verb phrase> -> <start of sentence><article><noun><verb phrase> -> a <noun><verb phrase> -> a dog <verb phrase> -> a dog <verb><noun phrase> -> a dog sees <article><noun> -> a dog sees a <noun> -> a dog sees a girl sentence | nounphrase verbphrase | | article noun verb nounphrase | | | | a dog sees article noun | | a girl