Q: Given a sentence in Igbo language, translate the sentence to English language keeping the meaning of the original sentence intact
Igbo sentence: Dika mumaatu, dika mumaatu, Gerber and Green (2000), Imai (2005), na Gerber and Green (2005) maka arumuka gbasara mmejuputa usoro miiko di mgbagwoju anya banyere ntuli aka.
A:
Internal validity can be difficult to ensure in complex field experiments. See, for example, Gerber and Green (2000), Imai (2005), and Gerber and Green (2005) for debate about the implementation of a complex field experiment about voting.