Given the emotion sadness and the tweet "Over 70% of social sharing is dark &amp; over 50% of web traffic comes from #darksocial. @colinzalewski #LIFTSocial", classify the intensity of the emotion displayed in the tweet. The classification options are: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.
1: low amount of sadness can be inferred