### Instruction:

Extract the cause and effect entities from the following sentence:
Such high level production chain system requirements are ded are satisfiable if and only if their constituent system requirements are entirely satisfied

### Assistant:

KEYWORD: if and only if
VARIABLE: Such high level production chain system requirements
CONDITION: are ded
CAUSE_1: their constituent system requirements are entirely satisfied
EFFECT_1: Such high level production chain system requirements are ded
EFFECT_2: are satisfiable

