Wikipedia: http://www.svcl.ucsd.edu/projects/crossmodal/
PKU Xmedia: https://github.com/yeqinglee/mvdata
Pascal sentence: http://vision.cs.uiuc.edu/pascal-sentences/
NUS-WIDE: https://lms.comp.nus.edu.sg/wp-content/uploads/2019/research/\nuswide/NUS-WIDE.html
Pascal VOC 2007: http://host.robots.ox.ac.uk/pascal/VOC/voc2007/