### Instruction:

Extract the cause and effect entities from the following sentence:
If a trade item is changed from being "Unbranded" to a brand, this requires a new GTIN

### Assistant:

KEYWORD: If
VARIABLE: this
CONDITION: requires a new GTIN
CAUSE_1: a trade item is changed from being "Unbranded" to a brand
EFFECT_1: this requires a new GTIN

