Alternatively, maybe it's a misspelling. There's a community called "Ete" in Akwa Ibom State. Or perhaps "Eteima" is a term from a local language. I'll need to consider if there's any known incident or term in the Niger Delta region that combines these words with "13."

Another thought: "13" could refer to the number of days, people, or a specific date. Maybe a protest that lasted 13 days in Wari around 2013?

Breaking it down: "Eteima" could be a name or a term from a local language. "Bonny" is more recognizable. There's a place called Bonny in Nigeria, near the Niger Delta. "Wari" is also a part of Lagos, Nigeria. "13" might refer to 13th Street or something related to the year 13, but that's less likely. Maybe "Wari 13" refers to an event in Wari, Lagos, or Bonny, Rivers State, in 2013?