### Instruction:

Extract the cause and effect entities from the following sentence:
An attribute in a supertype which names the subtype object class is called a subtype indication, and its domain of valid values is, by definition, the object ids of the subtype object classes

### Assistant:

VARIABLE: its domain of valid values
KEYWORD: which
CONDITION: the object ids of the subtype object classes
AND: and
NOT_RELEVANT: by definition
CAUSE_1: names the subtype object class
EFFECT_1: is called a subtype indication
EFFECT_2: the object ids of the subtype object classes

