### Instruction:

Extract the cause and effect entities from the following sentence:
An understanding of rationale enables accurate prioritisation and is an aid to preventing essential requirements from being deleted

### Assistant:

VARIABLE: essential requirements
CONDITION: from being deleted
CAUSE_1: An understanding of rationale
EFFECT_1: enables accurate prioritisation
AND: and
EFFECT_2: to preventing essential requirements from being deleted
KEYWORD: is an aid

