Parsing Each corpus was tokenized using UDPipe's (Straka et al., 2016) pre-trained UDv2.2 models (Straka, 2018) and then parsed as follows: We trained Dozat et al.
corpus studies of English, Pirahã, and a few other-mostly European-languages proposed constraints at one (Reich, 1969;Futrell et al., 2016), two (De Roeck et al., 1982), or three (Karlsson, 2010) levels of embedding.