[Change] don't return output

Signed-off-by: oleg komarov <o.komarov11@imperial.ac.uk>
[Add] license for data

Signed-off-by: oleg komarov <o.komarov11@imperial.ac.uk>
[Add] unzip data

Signed-off-by: oleg komarov <o.komarov11@imperial.ac.uk>