### Instruction:

Extract the cause and effect entities from the following sentence:
For compressed-air systems and oxygen-enriched systems, the need for an oxygen compatibility assessment shall be addressed on a case-by-case basis

### Assistant:

KEYWORD: For
CONDITION: shall be addressed on a case-by-case basis
VARIABLE: the need for an oxygen compatibility assessment
AND: and
EFFECT_1: the need for an oxygen compatibility assessment shall be addressed on a case-by-case basis
CAUSE_1: compressed-air systems
CAUSE_2: oxygen-enriched systems

