This paper is on control-flow extraction which is a part of workflow-extraction. Workflow extraction is the transformation of a textual process description into a formal workflow model. A textual process description is a form of representation for procedural knowledge. Procedural knowledge is "know how to do it"-knowledge. Workflow extraction opens the use of existing workflow retrieval methods for procedural knowledge which is expressed in natural language. In this paper we extended our existing workflow-extraction-framework with components for control-flow extraction. We present and evaluate two different approaches for control-flow extraction. For the evaluation of the control-flow we developed special evaluation functions which are based on the trace index of workflows. We show that our approaches for control-flow extraction are beneficiai compared with a sequential control-flow.