please generate five "queries" for the text in the triple quotas.
"""The training data sets for task a contain annotated articles from PubMed, where annotated means that MeSH terms have been assigned to the articles by the human curators in PubMed. Table 1 provides information about the provided datasets. Note that the main difference between those datasets among the different years, apart from the size, is the MeSH terms used. For example the 2015 training datasets contain articles where MeSH 2015 have been assigned. Also, for 2014, 2015 and 2016 there are two versions of the training data available. The small version (wrt size) consists of articles that belong to the pool of journals that the BioASQ team used to select the articles for the test data (this was a subset of the available journals). The bigger version consists of articles from every available journal. Since 2017 articles for the test data will be selected from all available journals, so only one corresponding training data set will be available. The evaluation of the results during each year of the challenge is performed using the corresponding version of the MeSH terms, thus their usage is highly recommended. The training datasets of previous years of the challenge are also available for reference reasons. Note that not every MeSH term is covered in the datasets. Participants, are allowed to use unlimited resources to train their systems.""". Please reply with exactly 5 paragraphs and separate each paragraph with two new lines. The very first paragraph must start with the word "help".
user