### Instruction:

Extract the cause and effect entities from the following sentence:
Before firing, a leak in the upstream-side parent metal seal could allow hazardous fluid at system pressure to enter the ram area

### Assistant:

CAUSE_1: firing
NEGATION: Before
CAUSE_2: a leak in the upstream-side parent metal seal
EFFECT_1: hazardous fluid at system pressure to enter the ram area
VARIABLE: hazardous fluid at system pressure
CONDITION: to enter the ram area
KEYWORD: could allow

