These are likely using different parsers. Namely, the (faster) neural net dependency parser running at corenlp.run -- which gets thrown off by the POS tag error -- versus the constituency parser you linked to.<p>You&#x27;re right that the configuration is confusing for new users. But, you have to remember that this is first and foremost research code intended to be flexible enough for the Stanford NLP group&#x27;s research needs. In terms of particular configuration sources, nearly everything should be configurable from properties passed in as a properties file. Are there exceptions to this rule?