### Instruction:

Extract the cause and effect entities from the following sentence:
Business Rules: materialCode and materialAgencyCode are paired elements; if one is used the other must be present

### Assistant:

NOT_RELEVANT: Business Rules: materialCode and materialAgencyCode are paired elements;
KEYWORD: if
VARIABLE: the other
CONDITION: must be present
CAUSE_1: one is used
EFFECT_1: the other must be present

