### Instruction:

Extract the cause and effect entities from the following sentence:
The pixel is constructed from a number of spatial samples that have been interpolated to the given reference grid location during the image rectification process

### Assistant:

VARIABLE: The pixel
KEYWORD: during
CONDITION: is constructed
NOT_RELEVANT: from
EFFECT_1: The pixel is constructed
CAUSE_1: have been interpolated to the given reference grid location
CAUSE_2: the image rectification process

