darker thing here it simply means that you a ver across different maskings of Bert because I guess even in classification it's not entirely clear how to get a signal out of Bert because they don't do this CLS vector with Bert what they do for classification and linear probing and it's written up here they simply take the they do an average pooling I think they do an average pooling of the of all the representations of the sequence and the last thing that I've also forgotten there's a lot of stuff when they fine