This paper describes the technical contribution of the supporting resources provided for the BioNLP Shared Task 2013. Following the tradition of the previous two BioNLP Shared Task events, the task organisers and several external groups sought to make system development easier for the task participants by providing automatically generated analyses using a variety of automated tools. Providing analyses created by different tools that address the same task also enables extrinsic evaluation of the

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... tools through the evaluation of their contributions to the event extraction task. Such evaluation can improve understanding of the applicability and benefits of specific tools and representations. The supporting resources described in this paper will continue to be publicly available from the shared task homepage http://2013.bionlp-st.org/