GAIA: A Fine-grained Multimedia Knowledge Extraction System. - Manling Li; Alireza Zareian; Ying Lin; Xiaoman Pan; Spencer Whitehead; Brian Chen 001; Bo Wu 018; Heng Ji 001; Shih-Fu Chang; Clare R. Voss; Daniel Napierski; Marjorie Freedman (ACL (demo), 2020)