### Instruction:

Extract the cause and effect entities from the following sentence:
Single-point failures with a severity of catastrophic or critical (as defined in [AD4], ECSS-Q-ST-30C) shall be eliminated or prevented by design

### Assistant:

VARIABLE: Single-point failures
CONDITION: prevented by design
OR: or
CAUSE_1: Single-point failures with a severity of catastrophic
CAUSE_2: critical
NOT_RELEVANT: (as defined in [AD4], ECSS-Q-ST-30C)
EFFECT_1: shall be eliminated
EFFECT_2: prevented by design


### END
