Add punctuation: Therefore a simple correlation overstates the performance of the model because the correlation gives equal weight to the correspondences in the early steps of the projections where there can be very little error as to the correspondences in the later part of the projection
A: Therefore a simple correlation overstates the performance of the model because the correlation gives equal weight to the correspondences in the early steps of the projections where there can be very little error as to the correspondences in the later part of the projection.

Add punctuation: Potassium is one of the salts that together with sodium is lost via the stools
A: Potassium is one of the salts that together with sodium is lost via the stools.

Add punctuation: 1313And it works great signs that it should cause even fire to come down from heaven to the earth before men
A:
13:13And it works great signs, that it should cause even fire to come down from heaven to the earth before men.