Added descriptors for second baseline approach
added Jaccard similarity
removed BM25 added Jaccard but no improvement
added Output formatting descriptor
Merge branch 'Amos/answering'
Merge branch 'master' into Yulong/OutputFormat
convent QuestionAnswers to output format
Merge branch 'Yulong/OutputFormat'
Implemented second answerer
Merge branch 'Amos/answering'
Merge branch 'master' into David/Triples: Get Yulong/Amos' progress