27. The negative word meaning "not" when forming part of a sentence,
and "no" when used as an answer to a question, is "ne". When used as
a sentence-negative, it usually immediately precedes the verb. For
emphatic negation of some other word than the verb, "ne" may precede
that word:
Violoj ne estas rugxaj, violets are not red.
La viroj ne sidas sur segxoj, the men are-not-sitting on chairs.
La kolombo kantas, ne flugas, the dove is-singing, not flying.
La domo estas blanka, ne verda, the house is white, not green.