### EXERCISE 3

# Read the data from searchresults.csv (http://www.cedriccourtois.be/files/searchresults.csv)
# Print the unique domain names extracted from all results (url variable in the data file)
# Count the number of times ‘hln.be’ is in the results
# Make a new csv file with only the top 3 ranked results (name it searchresults_top3.csv)
