A positive clause bears no sign of negation:
- I like apples.
- We climbed a mountain.
- She will return next Sunday.
Positive or neutral questions will also be tagged as positive:
- Do you like coffee?
- Can we leave now?
We will tag bipolar questions also as positive, but may add the keyword BIPOLAR:
- Do you like coffee or not?
Clauses will be tagged as negative whenever there is a clausal negation or a negative article or quantifier:
- She didn't call.
- We won't come.
- Nobody saw them.
- They were nowhere to be seen.
Questions can also be negative:
- Didn't you see the car?
- Isn't there a vegetarian restaurant in this area?
Positive clauses embedded under negative matrix clauses should receive the keyword NEGMAT.