### Instruction:

Extract the cause and effect entities from the following sentence:
The spacecraft shall be able to uplink with an average TC-rate of 64 kbps (TBC) during ground contact periods

### Assistant:

KEYWORD: during
VARIABLE: The spacecraft
CAUSE_1: ground contact periods
CONDITION: shall be able to uplink with an average TC-rate of 64 kbps
NOT_RELEVANT: (TBC)
EFFECT_1: The spacecraft shall be able to uplink with an average TC-rate of 64 kbps

