3 While Narayan et al. (2017) recently proposed the semi-automatically compiled WEB-SPLIT dataset for training automatic sentence splitting systems, here we generate a completely manual corpus, without a-priori splitting points nor do we pre-suppose that all sentences should be split. This corpus enriches the set of references focused on lexical operations that were collected by<cite> Xu et al. (2016)</cite> for the same source sentences and can also be used as an out-of-domain test set for Split-and-Rephrase (Narayan et al., 2017) .