Fixes for some test sentences

@linas The RelEx output for "English grammar" is a bit weird to me. When I typed "I studied English grammar.", I got
```
   _amod(grammar, English)

    subscript-TAG(English, .a)
    pos(English, noun)
    noun_number(English, singular)
```
That's not consistent, right? The link parser chose the A link, i.e. "English" as an adjective here, but the RelEx output it as a noun? "pos(English, noun)"  Is there a bug?