SYDNEY (Reuters) -Australia's Greens party said on Sunday it would lead a parliamentary inquiry into "price gouging" by major supermarkets as the country grapples with high costs of living. "The inquiry will scrutinise the impact of market concentration on food prices and the pattern of pricing strategies employed by the supermarket duopoly," Greens Senator Nick McKim said in a statement, referring to Australian grocers Woolworths and Coles. "It will also assess the rise in essential item prices, the validity of discounts offered, and the inflation of ...