### Instruction:

Extract the cause and effect entities from the following sentence:
If the Bar Code Type List class (telling which barcodes are on the package) exists, then there is a barcode on the package

### Assistant:

KEYWORD: then
VARIABLE: there
NOT_RELEVANT: (telling which barcodes are on the package)
CONDITION: is a barcode on the package
CAUSE_1: exists
EFFECT_1: there is a barcode on the package

