Reviewer 1: " the statement in line 153 in the neighbourhood of z nullJ i (z), f (x)null = 0. "

We are grateful to the reviewers for the insightful comments on our submission. All the minor comments will also be addressed in the revised manuscript. We will update line 153 to " The domain of z can be easily adjusted by translation and dilation after the training process. Reviewer 1: "emphasize the need for gradient evaluations when you state the observation." " .......The first and fourth columns show the relationship between the output and NN is very efficient compared to the evaluating the FEM model in Case (ii).