### Instruction:

Extract the cause and effect entities from the following sentence:
The spatial sample, identified by the indices (i,j), is spatially located at (xi,yj), where this location corresponds to the position of its point spread function centroid

### Assistant:

VARIABLE: this location
CONDITION: corresponds to the position of its point spread function centroid
KEYWORD: where
CAUSE_1: The spatial sample, identified by the indices (i,j), is spatially located at (xi,yj)
EFFECT_1: this location corresponds to the position of its point spread function centroid

