### Instruction:

Extract the cause and effect entities from the following sentence:
When the Sun enters the main lobe of the ground station antenna, this may prevent the proper reception of the Ka-Band link

### Assistant:

KEYWORD: When
VARIABLE: the Ka-Band link
CONDITION: the proper reception of
NOT_RELEVANT: this may
CAUSE_1: the Sun enters the main lobe of the ground station antenna
EFFECT_1: prevent the proper reception of the Ka-Band link
NEGATION: prevent

