WHU-NERCMS at TRECVID2019: Instance Search Task. - Longxiang Jiang; Jingyao Yang; Erxuan Guo; Fan Xia; Ruxing Meng; Jingfeng Luo; Xiangyu Li; Xinyi Yan; Zengmin Xu; Chao Liang 001 (TRECVID, 2019)