### Instruction:

Extract the cause and effect entities from the following sentence:
To maintain compatibility with Orion rendezvous link, the ICSIS defines this link at S-band

### Assistant:

EFFECT_1: To maintain compatibility with Orion rendezvous link
CAUSE_1: the ICSIS defines this link at S-band
VARIABLE: compatibility with Orion rendezvous link
CONDITION: To maintain

