Returns the property of the variable

        Example
        -------------
        >>> from pgmpy.readwrite import BIFReader
        >>> reader = BIFReader("bif_test.bif")
        >>> reader.get_property()
        {'bowel-problem': ['position = (335, 99)'],
        'dog-out': ['position = (300, 195)'],
        'family-out': ['position = (257, 99)'],
        'hear-bark': ['position = (296, 268)'],
        'light-on': ['position = (218, 195)']}

def get_property(self):
        """
        Returns the property of the variable

        Example
        -------------
        >>> from pgmpy.readwrite import BIFReader
        >>> reader = BIFReader("bif_test.bif")
        >>> reader.get_property()
        {'bowel-problem': ['position = (335, 99)'],
        'dog-out': ['position = (300, 195)'],
        'family-out': ['position = (257, 99)'],
        'hear-bark': ['position = (296, 268)'],
        'light-on': ['position = (218, 195)']}
        """
        variable_properties = {}
        for block in self.variable_block():
            name = self.name_expr.searchString(block)[0][0]
            properties = self.property_expr.searchString(block)
            variable_properties[name] = [y.strip() for x in properties for y in x]
        return variable_properties