### Instruction:

Extract the cause and effect entities from the following sentence:
Parent metal shear-section valves used in single isolation configurations (without additional inhibits) need additional inspection and rigorous analysis to ensure the high unlikelihood that critical flaws exist

### Assistant:

CAUSE_1: need additional inspection
AND: and
CAUSE_2: rigorous analysis
EFFECT_1: to ensure the high unlikelihood that critical flaws exist
NOT_RELEVANT: (without additional inhibits)
VARIABLE: the high unlikelihood that critical flaws exist
CONDITION: used in single isolation configurations

