source: [lemma=hard] [word=to] [tag=VB] [tag=RP] [word=□]
destination: [lemma=hard] [word=to] [tag=VB] [tag=RP] [word=all]
spec: " It 's very hard to sort out all the family influences and varying educational opportunities . All formats are represented , including microform and a growing collection of fine press and art material .