AnalyzerSentence analysis3SpansSentenceそ知らぬ顔をする1000 character limitAnalyzeSentenceそ知しらぬ顔かおをするSpan Detailsそ知しらぬ顔かおfeigned ignorance; pretending not to know-> 素知らぬ顔expression, nounをobject markergrammarするlight/support verb with a noun or noun-like phrasegrammar
