def get_attrib_tokens(self, a="<STR_LIT>"):
return self.sentence.__getattribute__(a)[<EOL>self.get_word_start_index() : self.get_word_end_index() + <NUM_LIT:1><EOL>]<EOL>
Get the tokens of sentence attribute *a*.

        Intuitively, like calling::

            span.a


        :param a: The attribute to get tokens for.
        :type a: str
        :return: The tokens of sentence attribute defined by *a* for the span.
        :rtype: list