In this deliverable we define a number of usage scenarios for tasks that have to be solved during the whole life-cycle of ontologies. The detailed description of these tasks relevant for, e.g., ontology design, maintenance, access, usage, interoperation were already provided in previous deliverables. Now, we investigate the combination of various elementary tasks for the above-mentioned processes, and we analyze the interplay of corresponding reasoning services. We integrate and apply task-specific reasoning techniques to a set of test ontologies. The selection of test ontologies and their specific purposes is presented in this report.