Complex sentence: Patrick Ferrell, CEO of IDG's Infotainment World, had sent his VP Marketing to the meeting, and hearing the result, the management team at Infotainment World immediately announced E3.
Split into simpler sentences: Patrick Ferrell, CEO of IDG's Infotainment World, sent his vice president of marketing to the meeting. After Ferrell was relayed the message, the management team at Infotainment World announced E3.