Hi Mike,

very useful article, especially code - thank you.

I tested code and found one problem.

If I entered phrase:

president -aluminium

it wokrs fine.

If phrase is:

-aluminium president

it generates syntax error, phrase cannot start from negation. I checked goole it understand correctly this kind of phrases.

How can I edit grammar to avoid this kind of errors?

Thank you again.

Regards,

Oleg.