### Instruction:

Extract the cause and effect entities from the following sentence:
During nominal modes, no spacecraft re-orientations and/or orbit maintenance manoeuvres shall be performed

### Assistant:

KEYWORD: During
VARIABLE: orbit maintenance manoeuvres
NEGATION: no
AND: and
OR: or
CONDITION: shall be performed
CAUSE_1: nominal modes
EFFECT_1: no spacecraft re-orientations
EFFECT_2: orbit maintenance manoeuvres shall be performed

