diff --git a/daos/thread.php b/daos/thread.php
index ee291f0..bf4b0fa 100644
--- a/daos/thread.php
+++ b/daos/thread.php
@@ -51,6 +51,15 @@ Thread
   }
 
 
+  public static function
+  find (
+      int $id)
+  : \Dto\Thread
+  {
+    ;
+  }
+
+
   public static function
   create_thread (
       SQLite3 $db,
diff --git a/import.php b/import.php
new file mode 100644
index 0000000..7fcc6d4
--- /dev/null
+++ b/import.php
@@ -0,0 +1,7 @@
+<?php
+
+require_once __DIR__ . '/daos/response.php';
+require_once __DIR__ . '/daos/thread.php';
+require_once __DIR__ . '/dtos/response.php';
+require_once __DIR__ . '/dtos/thread.php';
+
diff --git a/www/index.php b/www/index.php
index 832732c..f83c3d8 100644
--- a/www/index.php
+++ b/www/index.php
@@ -1,6 +1,7 @@
 <?php
 
-use \Dao;
+require_once __DIR__ . '/../import.php';
+
 use \Dto;
 
 
@@ -28,7 +29,7 @@ else
 $dir = './images/';
 $handle = opendir ($dir);
 
-if ($row = Dao\Thread :: find ($thread))
+if ($row = \Dao\Thread :: find ($thread))
   {
     $title = $row -> title;
     $explain = $row -> explain;
@@ -38,13 +39,13 @@ if (isset ($_GET['id']))
   {
     if (($_GET['evaluate'] ?? '') === 'good')
       {
-        Dao\Response :: like ((int) $_GET['id']);
+        \Dao\Response :: like ((int) $_GET['id']);
         header ("Location: ./?thread=$thread&sort=$sort");
       }
 
     if (($_GET['evaluate'] ?? '') === 'bad')
       {
-        Dao\Response :: dislike ((int) $_GET['id']);
+        \Dao\Response :: dislike ((int) $_GET['id']);
         header ("Location: ./?thread=$thread&sort=$sort");
       }
   }