Hello I have looked at the .tsv for assignment 1. The assignment doc mentions that the data cleaning step has been completed. However it looks like for the date of breach column, some dates are ranges, some years are given in 2 digit, others 4 digit format. Are we expected to extract and format the year from the date_of_breach column and use that, or can we use the 'year' of summary report column, noting some of these years are missing. Thanks Adrian.