new test sentences

@linas @ruiting Please review the newly added test sentences. 
> _obj(taste, same) doesn't seem correct to me.
>

Right. This is a bug in link-grammar.  Kasun, please change the test
sentence to "the coffee looks the same as it did last year".  Somehow,
tastes/smells does not parse correctly.  Also, please open a bug for me,
reminding me to fix this sentence (and that the fix involves taste->look)
-- I don't have github access this week.