The wave 's deep trough reflects the influence of European perspective , which Hokusai gleaned from engravings and printed books that circulated in Japan .
Hokusai /people/person/nationality Japan
DT NN POS JJ NN VBZ DT NN IN JJ NN , WDT NNP VBD IN NNS CC VBN NNS WDT VBD IN NNP .
Hokusai
PERSON
Japan
LOCATION
/people/person/nationality