Customizing NLU

It is remarkable how well Watson performed at assessing this document with its out-of-the-box default model. However, you may have noticed a few things it got wrong. For example, when assessing the types of entities in the document in this summary, the following entities were found:

The following entities were found:
[SpaceX Headquarters] of type <Company> was found 2 times, with 31% confidence.
The entity was found in:
"the SpaceX headquarters", at index 6584
"SpaceX Headquarters", at index 28749
The emotional scores for this entity are: 0% Anger; 0% Disgust; 0% Fear; 0% Joy; and 0% Sadness.
The sentiment score for this entity is: 0.423723
[SpaceX] of type <Organization> was found 1 times, with 30% confidence.
The entity was found in:
"SpaceX", at index 7994
The emotional scores for this entity are: 10% Anger; 1% Disgust; 12% Fear; 28% Joy; and 5% Sadness.
The sentiment score for this entity is: 0.0

SpaceX Headquarters is not really a company, but rather it is...