In paper 'EmojiNet: An Open Service and API for Emoji Sense Discovery', the authors learn additional context words for emoji sense definitions as follows: For each emoji ei ∈ E, they extract the definition di of the emoji ei and the set of all emoji sense definitions Si of ei from EmojiNet. Then, for each word w in di, they extract the twenty most similar words from the two word embedding models as two separate sets. Such method is very similar with another paper that you've read. Provide the full name of that paper.