Complex sentence: When they arrived, they witnessed great seething masses of thread, and were almost burned alive by the searing heat, they were called back by Brekke, a weyrwoman who had lost her Queen Dragoin, and loved F'nor.
Split into simpler sentences: When they arrived, they witnessed great seething masses of thread, and were almost burned alive by the searing heat. They were called back by Brekke, a weyrwoman who had lost her Queen, and loved F'nor.