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WorldTree: A Corpus of Explanation Graphs for Elementary Science Questions supporting Multi hop Inference

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Figure

Figure 1: An example multiple choice science question, the cor-rect answer, and a sample explanation graph for why that answeris correct
Figure 2: Examples of tables and table rows from the tablestore, grounded in an example question and explanation
Figure 3: The explanation authoring web tool. Interfacecomponents include: (1) A list of user-settable flags to as-sist in the annotation and quality review process; (2) Ques-tion and answer candidates; (3) Query terms for search; (4)Query results (tablestore); (5) Query results (complete ex-planations); (6) Current explanation being assembled; (7)Explanation graph visualization of lexical overlap withinthe explanation.
Figure 5:Monte-carlo simulation showing the proportion ofquestions whose explanations overlap by 1 or more, 2 or more,3 or more, ..., explanation sentences

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