Question: Which datasets are used?
Answer: A corpus of 740 classical and contemporary English poems,  a corpus of 14950 metaphor sentences retrieved from a metaphor database website , a corpus of 1500 song lyrics ranging across genres, Gutenberg dataset 
Alternative answer: (1) A corpus of 740 classical and contemporary English poems, (2) a corpus of 14950 metaphor sentences retrieved from a metaphor database website, (3) a corpus of 1500 song lyrics ranging across genres, Gutenberg dataset BIBREF24