石油の発見は思いがけない幸運だった。
Sentence Analyzer
English Translation
        The discovery of oil was a lucky accident.
    
Furigana
Romanji
        Sekiyu no hakken wa omoigakenai kōun datta.
    
Words
            
                石油
            
            
                (せきゆ)
            
        
        
            oil; petroleum; kerosene
        
    
            
                の
            
            
                (の)
            
        
        
            indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question
        
    
            
                発見
            
            
                (はっけん)
            
        
        
            discovery; detection; finding
        
    
            
                は
            
            
                (は)
            
        
        
            topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
        
    
            
                思いがけない
            
            
                (おもいがけない)
            
        
        
            unexpected; contrary to expectations; by chance; casual
        
    
            
                幸運
            
            
                (こううん)
            
        
        
            good luck; fortune
        
    
            
                だ
            
            
                (だ)
            
        
        
            be; is; indicates past or completed action; indicates light imperative
        
    Kanji
Readings: セキ、 シャク、 コク、 いし
                        Meaning: stone
                    Readings: ユ、 ユウ、 あぶら
                        Meanings: oil, fat
                    Readings: ハツ、 ホツ、 た.つ、 あば.く、 おこ.る、 つか.わす、 はな.つ
                        Meanings: departure, discharge, publish, emit, start from, disclose, counter for gunshots
                    Readings: ケン、 み.る、 み.える、 み.せる
                        Meanings: see, hopes, chances, idea, opinion, look at, visible
                    Readings: シ、 おも.う、 おもえら.く、 おぼ.す
                        Meaning: think
                    Readings: コウ、 さいわ.い、 さち、 しあわ.せ
                        Meanings: happiness, blessing, fortune
                    Readings: ウン、 はこ.ぶ
                        Meanings: carry, luck, destiny, fate, lot, transport, progress, advance