### Instruction:

Extract the cause and effect entities from the following sentence:
The targets are all compact objects (neutron stars, black holes and AGN) therefore the measurement requires no imaging capability

### Assistant:

VARIABLE: the measurement
CONDITION: imaging capability
NOT_RELEVANT: (neutron stars, black holes and AGN)
KEYWORD: therefore
CAUSE_1: The targets are all compact objects
EFFECT_1: the measurement requires no imaging capability
NEGATION: no

