This dataset provides masked sentences and multi-token phrases that were masked-out of these sentences. We offer 3 datasets: a general purpose dataset extracted from the Wikipedia and Books corpora, and 2 additional datasets extracted from pubmed abstracts. As for the pubmed data, please be aware that the dataset does not reflect the most current/accurate data available from NLM (it is not being updated). For these datasets, the columns provided for each datapoint are as follows: text- the original sentence span- the span (phrase) which is masked out span_lower- the lowercase version of span range- the range in the text string which will be masked out (this is important because span might appear more than once in text) freq- the corpus frequency of span_lower masked_text- the masked version of text, span is replaced with [MASK] Additinaly, we provide a small (3K) dataset with human annotations. For full description of datasets and annotation procedure, please see: Oren Kalinsky, Guy Kushilevitz, Alex Libov, Yoav Goldberg Simple and Effective Multi-Token Completion from Masked Language Models, EACL findings 2023.