What is the fine-grained topic of the following text: Guest Speakers include subject matter experts from: GSA OSDBU, DC and VA Procurement Technical Assistance Center(s) (PTAC), National Community Reinvestment Coalition, Eastern Reserch Group (ERG) (an EPA Prime Contractor) and EPA Contract Specialists from EPA Program offices and more!! Only return the topic.
Guest speaker presentations at a procurement and contract management event.