<h3>test</h3>
<% memos=Memo.where('author_id = 5 AND parent_id IS NOT NULL') %>
<% memos.each do |m|%>
<tr>
<% if Memo.find(m.parent_id).author_id != 5 %>
<td><%=m.subject%></td>
<% end %>
</tr>>
<hr/>