### Instruction:

Extract the cause and effect entities from the following sentence:
Rationale: Potable water is necessary to maintain crew hydration during Gateway operations

### Assistant:

NOT_RELEVANT: Rationale
CAUSE_1: Potable water is necessary
CAUSE_2: Gateway operations
EFFECT_1: to maintain crew hydration
KEYWORD: during
VARIABLE: Potable water
CONDITION: is necessary

