How do you submit the answer in WikiAnswers?
On the question page, click the big orange "Answer" button, and
it will show you the editable area to answer the question. If the
question is already answered, click the green "improve answer"
button and add clarification to the answer.
These will work unless the question has been protected for
vandalism. If that is the case, there will be instructions on the
question page about how to submit more information for
consideration.