I have three questions now: * How much (per comment) are these "native speakers from India" paid? * How many comments do they have to label in an hour (or in

I have three questions now: * How much (per comment) are these "native speakers from India" paid? * How many comments do they have to label in an hour (or in a minute)? I guess it's more than 2 comments in a minute. * What if the comment is sarcastic and this can only be understood from its context?