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 L03 Other theta roles


           Other Theta Roles

o  Instrument theta role
    + Ex.:  Ram killed Ravana with an arrow.
       - Arrow is the instrument theta role.

o  Beneficiary theta role
    + Ex.: Ram gave a book to Sita
       - Sita is the beneficiary.

o  Source theta role
    + Ex.: The leaf fell from the tree.
       - Tree is the source.

o  Destination theta role
    + Ex.: The train left for Delhi.
       - Delhi is the destination theta role.
    * In Paninian theory, 'Delhi' is karma.

o  Purpose: Another important theta-role
    + Ex.: Ram bought a ticket to see the film.
       - 'To see the film' is the purpose of action of 'buying a ticket'
    * Every action has a purpose, whether explicitly mentioned or not.
    - In Paninian framework: Purpose is called taadarthya. But
      taadarthya is distinct from karaka.

o  Theta roles not fixed in number.
   Different people use different number of theta roles.
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