<qa>  What is the combination of PaclitaxelCarboplatin and PembroliThe investigators hypothesize that tumor cell killing by cytotoxic chemotherapy exposes the immune system to high levels of tumor antigens.The combination of PaclitaxelCarboplatin and Pembrolizumab will invigorate tumor-specific T-cell immunity in this setting by inhibiting PD-L1PD-1 signaling, and may result in deeper and more durable responses compared with standard chemotherapy alone. 