def _char_to_word_index(self, ci):
i = None<EOL>for i, co in enumerate(self.sentence.char_offsets):<EOL><INDENT>if ci == co:<EOL><INDENT>return i<EOL><DEDENT>elif ci < co:<EOL><INDENT>return i - <NUM_LIT:1><EOL><DEDENT><DEDENT>return i<EOL>
Return the index of the **word this char is in**.

        :param ci: The character-level index of the char.
        :type ci: int
        :return: The word-level index the char was in.
        :rtype: int