AnalyzerSentence analysis3SpansSentence平坦化する1000 character limitAnalyzeSentence平へい坦たん化かするSpan Details平へい坦たんflat; level; even; smooth; calm; peaceful; uneventful; trouble-freena-adjective, noun化か-ization; -ification; change intosuffixするlight/support verb with a noun or noun-like phrasegrammar