### Instruction:

Extract the cause and effect entities from the following sentence:
Unstable response leads to apparent noise in constant flux sources and also to QPO broadening or sidebands

### Assistant:

CONDITION: to apparent
VARIABLE: QPO broadening
KEYWORD: leads
AND: and also to
OR: or
CAUSE_1: Unstable response
EFFECT_1: to apparent noise in constant flux sources
EFFECT_2: QPO broadening
EFFECT_3: sidebands

