### Instruction:

Extract the cause and effect entities from the following sentence:
The TMT Observatory subsystems shall implement private data caches in the case they require large volume outside the data management system budget

### Assistant:

VARIABLE: they
CONDITION: require large volume outside the data management system budget
KEYWORD: in the case
EFFECT_1: The TMT Observatory subsystems shall implement private data caches
CAUSE_1: they require large volume outside the data management system budget

