### Instruction:

Extract the cause and effect entities from the following sentence:
Because the devices use a radio (broadcast) communications system, they do not have to be in the LoS of each other and the synchronization is avoided

### Assistant:

KEYWORD: Because
VARIABLE: the synchronization
CONDITION: have to be in the LoS of each other
NOT_RELEVANT: (broadcast)
CAUSE_1: communications system
NEGATION: is avoided
AND: and
EFFECT_2: the synchronization
EFFECT_1: they do not have to be in the LoS of each other

