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<Paper uid="C92-4170">
  <Title>THE ASSIGNMENT OF GRAMMATICAL RELATIONS IN NATURAL LANGUAGE PROCESSING</Title>
  <Section position="3" start_page="0" end_page="0" type="metho">
    <SectionTitle>
3. An example
</SectionTitle>
    <Paragraph position="0"> In figure 1, we can find the result of the interpretation of sentence 4. When the analysis arrives at lavora, in the relative sentence, its initial stratum &lt;SUB J&gt; is retrieved from the lexicon. Since ehe (who) is a nominal without a prepositional marker, it (or better the element refelTed to) is the SUBJ of lavora, as stated by the Proposal Rules. Lavora has also an adjunct, al guardaroba (at the wardrobe), a non-teml relation of type LOC. The structure for the nominal description la ragazza che lavora al guardaroba has already been built, ACTES DE COLING-92, NArCrES. 23-28 Aot~q 1992 l 0 9 3 PROC. Ot: COLING-92. NAN'IF.S. At C/;. 23k28 1992 when the input word is the verb persuadere.</Paragraph>
    <Paragraph position="1"> Its lexieal entry provides the parser with an initial stratum of grammatical relations that consists of: a SUBJ, an OBJ and a subordinate sentential Goal (SUB-Goal) 3, i.e. a persuader, a persuadee and the persuasion. This basic assignment can be related to the deep cases of AGT, PAT and GOAL respectively. Moreover, a lexical rule is contained in the lexical entry: The SUBJ of the subordinate untensed clause governed by persuadere is the OBJ element of the governing clau.~e.</Paragraph>
    <Paragraph position="2"> Since the verb is in the passive form and the current stratum features a SUBJ and an OBJ relations, the Passivization rule in the SR group is triggered, in order to find the actual arrangement of relations in the input sentence.</Paragraph>
    <Paragraph position="3"> The new stratum is &lt;SUBJ, Cho-I,SUB-Goal&gt;, against which the proposals made by the PR group are matched. Since the nominal description already found is not inflected and is not marked by a preposition, the positional rules suggest that, since it precedes the verb and agrees with it, a possible assignment of relation is SUBJ. The semantic check, which is activated on tbe basic relation (i.e. OBJ) validates such an assignment, because a girl that works at the wardrobe may happen to be persuaded. The analysis proceeds to the next nominal description, with the set of relations (Cho-1, SUB-Goal) not assigned yet. Da un eliente (by a customer) has exactly the form of a Cho-1 in Italian. The Proposal Rules, whose hypothesis is confirmed by the semantic check, are sufficient to deal with this situation. When we find the verb comprare (buy), the PR group assigns to such a description the SUB-Goal relation and consequently the lexical rule associated with persuadere assigns the SUBJ relation of the initial stratum of comprare to la ragazza the .... The initial stratum of comprare features also an OBJ relation, that will be assigned to eneiclopedia, when it is found.</Paragraph>
    <Paragraph position="4"> The completeness of the set of found grammatical relations is checked when the node corresponding to the verb is &amp;quot;closed&amp;quot;, i.e. when it cannot have further modifiers.</Paragraph>
  </Section>
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