 The data collected during the US election campaign, contain original tweets from 822 troll accounts which have been identified as such , based on archive data released by Twitter related to state-sponsored trolls' campaigns.
<clarity>  The data collected during the US election campaign, contain original tweets from 822 troll accounts which have been identified as such , based on archive data released by Twitter related to state-sponsored trolls' campaigns.
 The data contain original tweets from 822 troll accounts which have been identified as such , based on archive data released by Twitter related to state-sponsored trolls' campaigns.