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