### Instruction:

Extract the cause and effect entities from the following sentence:
It shall not be possible for any General purpose radio user to send a Railway emergency call by dialling a short code or telephone number

### Assistant:

VARIABLE: a short code
OR: or
CAUSE_1: any General purpose radio user
CAUSE_2: telephone number
NEGATION: not be possible
NOT_RELEVANT: It shall
KEYWORD: by
CONDITION: to send a Railway emergency call
EFFECT_1: to send a Railway emergency call

