12. The computer program product of claim 11 , wherein the computer readable program further causes the computing device to adjust the confidence scores of the one or more candidate answers associated with the QA system pipeline at least by: determining a weighting factor for the confidence scores based on determined relevance of the QA system pipeline to the input question.
12. The computer program product of claim 11 , wherein the computer readable program further causes the computing device to adjust the confidence scores of the one or more candidate answers associated with the QA system pipeline at least by: determining a weighting factor for the confidence scores based on determined relevance of the QA system pipeline to the input question. 15. The computer program product of claim 12 , wherein the computer readable program further causes the computing device to determine a weighting factor for the confidence scores based on a determined relevance of the QA system pipeline to the input question at least by calculating the weighting factor as a function of a degree of matching of the input question to a corpora of documents used to train the QA system pipeline.