Given a sentence in Igbo language, translate the sentence to English language keeping the meaning of the original sentence intact
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Question: Igbo sentence: The usoro nke dara ya mbà ọrịa na-adịghị ghọtara, na o yiri yiri na ọ dịghị otu ihe kpatara.

Answer: The mechanisms of depressive disorders are not well understood, and it seems likely that there is no single cause .


Question: Igbo sentence: Martin bụ naanị 50 mita site n'ụlọ ya, ma ọ bịara azụ idaha.

Answer: Martin was only 50 yards from his home, but he came back on the scene .


Question: Igbo sentence: N'agbanyeghị na omume ejiwela na-adịbeghị anya, ọ bụ ka nke abụọ kasị nkịtị cancer na ụwa.

Answer:
Though its incidence has declined in recent years, it is still the second most common cancer in the world .