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The phrase-level parser
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red, white and blue three and twenty blackbirds
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simple pronoun noun groups, €.g., he.
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4.7 Some examples
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Figure 4-5 shows an example of the phrase-level parse produced by the parser.
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The text is a portion of a computer-taught course at Stanford. The paragraphs
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parsed here are taken from the end of a section about predicate calculus.
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PARSER: NOUN GROUP: MOST OF THE EXERCISES
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PARSER: VERB GROUP: ARE
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PARSER: NOUN GROUP: TRANSLATIONS
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PARSER: UNCLASSIFIED: .
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PARSER: VERB GROUP: THERE ARE
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PARSER: NOUN GROUP: SEVERAL IMPORTANT CHANGES
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PARSER: PREPOSITIONAL PHRASE: IN THE WAY
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PARSER: NOUN GROUP: THE QUANTIFIER RULES
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PARSER: VERB GROUP: WILL WORK
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PARSER: PREPOSITIONAL PHRASE: FOR THE REMAINDER OF THE
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COURSE
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PARSER: UNCLASSIFIED: .
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PARSER: UNCLASSIFIED: .
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PARSER: UNCLASSIFIED: FIRST
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PARSER: UNCLASSIFIED: ,
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PARSER: NOUN GROUP: THE PROGRAM
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PARSER: VERB GROUP: WILL INFORM
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PARSER: NOUN GROUP: YOQOU
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PARSER: UNCLASSIFIED: IMMEDIATELY
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PARSER: UNCLASSIFIED: IF
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PARSER: NOUN GROUP: A QUANTIFIER INFERENCE
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PARSER: VERB GROUP: VIOLATES
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PARSER: NOUN GROUP: ANY OF THE RESTRICTIONS
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PARSER: UNCLASSIFIED: .
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PARSER: UNCLASSIFIED: .
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PARSER: UNCLASSIFIED: .
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PARSER: NOUN GROUP: THAT WAY
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PARSER: NOUN GROUP: AN OVERSIGHT
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PARSER: VERB GROUP: WON’T COST
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PARSER: NOUN GROUP: YOQU
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PARSER: NOUN GROUP: A LOT OF WORK
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PARSER: UNCLASSIFIED: .
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PARSER: UNCLASSIFIED: .
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PARSER: UNCLASSIFIED: .
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PARSER: NOUN GROUP: YOU
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PARSER: VERB GROUP: CAN'T USE
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PARSER: NOUN GROUP: AMBIGUOUS NAMES
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PARSER: PREPOSITIONAL PHRASE: WITH A SHARP
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PARSER: PREPOSITIONAL PHRASE: IN THEM
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PARSER: UNCLASSIFIED: ANYMORE
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PARSER: UNCLASSIFIED: .’
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PARSER: UNCLASSIFIED: .
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PARSER: <EOF>
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Figure 4-5: Example of PARSER operation
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51
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