### Instruction:

Extract the cause and effect entities from the following sentence:
This specification requires that the valve meet a demonstrated safety factor of 2.5 to 4.0, as applicable

### Assistant:

CAUSE_1: This specification
KEYWORD: requires that
EFFECT_1: the valve meet a demonstrated safety factor of 2.5 to 4.0
NOT_RELEVANT: as applicable
VARIABLE: the valve
CONDITION: meet a demonstrated safety factor of 2.5 to 4.0

