### Instruction:

Extract the cause and effect entities from the following sentence:
By reading and identifying the tags (Assuming that the readers are placed in a well known position) the distance or the placement of nodes estimation is calculated

### Assistant:

CONDITION: is calculated
AND: and
VARIABLE: the placement of nodes estimation
NOT_RELEVANT: (Assuming that the readers are placed in a well known position)
OR: or
CAUSE_1: reading
CAUSE_2: identifying the tags
EFFECT_1: the distance
EFFECT_2: the placement of nodes estimation is calculated
KEYWORD: By

