def to_triple(self, fmt: str = "<STR_LIT>") -> dict:
if self.ast:<EOL><INDENT>return self.ast.to_triple(ast_obj=self.ast, fmt=fmt)<EOL><DEDENT>else:<EOL><INDENT>return {}<EOL><DEDENT>
Convert AST object to BEL triple

        Args:
            fmt (str): short, medium, long formatted BEL statements
                short = short function and short relation format
                medium = short function and long relation format
                long = long function and long relation format

        Returns:
            dict: {'subject': <subject>, 'relation': <relations>, 'object': <object>}