Sequential-NIAH: A Needle-In-A-Haystack Benchmark for Extracting Sequential Needles from Long Contexts. - Yifei Yu; Qian-Wen Zhang; Lingfeng Qiao; Di Yin; Fang Li; Jie Wang; Zengxi Chen; Suncong Zheng; Xiaolong Liang; Xing Sun (CoRR, 2025)