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Hello, I have a question concerning the change of Breco purity when moving from SP4/rel.10 (most of the run1-2 analyses) to SP6/rel.14 (run1-4). Do you see a reduction in purity with the newer reconstruction release in both data and MC? And can you possibly quantify it? Similarily for the yield, I guess this is higher per fb-1 for the new release but does someone have some numbers? I expect you only have these numbers for events with an identified lepton and not for all Breco candidates, but this would already help. For the Breco b->sg analysis we see a higher (BB) background i.e. reduced purity and would like to better understand this. Thanks for any help, Henning