Rather, all three are general purpose, phenomenon-oriented regression test suites.
there are some differences in the design of the individual test suites that we expect to affect the impact of our performance improvements: while the MRS and TSNLP test suites consist of rather short utterances (MRS: 4.44 words/item, TSNLP: 4.76 words/item), Babel is slightly more complex (6.76 words/item).