context: In the 1960s, according to the World Health Organization, the average height of men in the USSR was 168 cm, women - 157 cm [5]. Over the next 50 years, the growth of both men and women increased by about 10 cm: according to data for 2013, the average height of men in Russia was 178 cm, women - 166 cm [5].
question: What is the average height of a man in Russia?
answers.text: 178 cm