### Instruction:

Extract the cause and effect entities from the following sentence:
ISS standard communications are used when the spacecraft closes to within tens of kilometers to the ISS and ship-to-ship voice communications are established

### Assistant:

EFFECT_1: ISS standard communications are used
KEYWORD: when
CAUSE_1: the spacecraft closes to within tens of kilometers to the ISS
AND: and
CAUSE_2: ship-to-ship voice communications are established
VARIABLE: hip-to-ship voice communications
CONDITION: are established

