--input INPUT_FILE	--output OUTPUT_FILE	--env RANK
s3://{bucket-name}/data/titles/hamlet.txt	s3://{bucket-name}/output/hamlet-count.txt	100
s3://{bucket-name}/data/titles/kinglear.txt	s3://{bucket-name}/output/kinglear-count.txt	100
s3://{bucket-name}/data/titles/othello.txt	s3://{bucket-name}/output/othello-count.txt	100