Such transition systems can therefore not be extended to transitionbased semantic parsers (Damonte et al., 2017) without (a) losing expressive capacity, (b) giving up compositionality, (c) adding mechanisms for non-projectivity (Gómez-Rodríguez et al., 2018), or (d) using a lambda-style semantic algebra.
our result clarifies how to build an effective and accurate semantic parser.