AnalyzerSentence analysis3SpansSentenceメタン生成古細菌1000 character limitAnalyzeSentenceメタン生せい成せい古こ細さい菌きんSpan Detailsメタンmethanenoun生せい成せいcreation; generation; formation; derivationnoun, suru verb古こ細さい菌きんarchaea; archaebacterianoun