Researchers have proposed many algorithms to combine parses from multiple parsers into one final parse (Henderson and Brill, 1999; Zeman anď Zabokrtskỳ, 2005;<cite> Sagae and Lavie, 2006</cite>; Nowson and Dale, 2007; Fossum and Knight, 2009; Petrov, 2010; Johnson and Ural, 2010; Huang et al., 2010; McDonald and Nivre, 2011; Shindo et al., 2012; Narayan and Cohen, 2015) .