diff --git a/jedi/evaluate/docstrings.py b/jedi/evaluate/docstrings.py
index dac52e1d..4f420291 100644
--- a/jedi/evaluate/docstrings.py
+++ b/jedi/evaluate/docstrings.py
@@ -15,9 +15,11 @@ annotations.
 """
 
 import re
+from textwrap import dedent
 
 from jedi.evaluate.cache import memoize_default
 from jedi.parser import Parser
+from jedi.common import indent_block
 
 DOCSTRING_PARAM_PATTERNS = [
     r'\s*:type\s+%s:\s*([^\n]+)',  # Sphinx
@@ -35,24 +37,30 @@ REST_ROLE_PATTERN = re.compile(r':[^`]+:`([^`]+)`')
 @memoize_default(None, evaluator_is_first_arg=True)
 def follow_param(evaluator, param):
     func = param.parent_function
-    # print func, param, param.parent_function
     param_str = _search_param_in_docstr(func.raw_doc, str(param.get_name()))
-    position = (1, 0)
 
+    code = dedent("""
+    class PseudoDocstring():
+        '''Create a pseudo class for docstring statements.'''
+    %s
+    """)
     if param_str is not None:
-
         # Try to import module part in dotted name.
         # (e.g., 'threading' in 'threading.Thread').
         if '.' in param_str:
             param_str = 'import %s\n%s' % (
                 param_str.rsplit('.', 1)[0],
                 param_str)
-            position = (2, 0)
 
-        p = Parser(param_str, no_docstr=True)
-        stmt = p.module.get_statement_for_position(position)
-        if stmt is None:
+        p = Parser(code % indent_block(param_str), no_docstr=True)
+        pseudo_cls = p.module.subscopes[0]
+        try:
+            stmt = pseudo_cls.statements[-1]
+        except IndexError:
             return []
+
+        stmt.start_pos = param.start_pos
+        pseudo_cls.parent = param.get_parent_until()
         return evaluator.eval_statement(stmt)
     return []
 
@@ -105,6 +113,7 @@ def _strip_rest_role(type_str):
         return type_str
 
 
+@memoize_default(None, evaluator_is_first_arg=True)
 def find_return_types(evaluator, func):
     def search_return_in_docstr(code):
         for p in DOCSTRING_RETURN_PATTERNS:
diff --git a/jedi/evaluate/finder.py b/jedi/evaluate/finder.py
index 55c86ed9..b17e7732 100644
--- a/jedi/evaluate/finder.py
+++ b/jedi/evaluate/finder.py
@@ -87,7 +87,7 @@ class NameFinder(object):
                 break
 
         if not result and isinstance(self.scope, er.Instance):
-            # __getattr__ / __getattribute__
+            # handling __getattr__ / __getattribute__
             for r in self._check_getattr(self.scope):
                 if not isinstance(r, compiled.CompiledObject):
                     new_name = copy.copy(r.name)
diff --git a/jedi/evaluate/helpers.py b/jedi/evaluate/helpers.py
index 23aa21ed..cb9434ad 100644
--- a/jedi/evaluate/helpers.py
+++ b/jedi/evaluate/helpers.py
@@ -173,7 +173,7 @@ class FakeStatement(pr.Statement):
     def __init__(self, expression_list, start_pos=(0, 0)):
         p = start_pos
         super(FakeStatement, self).__init__(FakeSubModule, expression_list, p, p)
-        self._expression_list = expression_list
+        self.set_expression_list(expression_list)
 
 
 class FakeName(pr.Name):
diff --git a/jedi/evaluate/param.py b/jedi/evaluate/param.py
index 04b21e21..34875999 100644
--- a/jedi/evaluate/param.py
+++ b/jedi/evaluate/param.py
@@ -32,7 +32,7 @@ def get_params(evaluator, func, var_args):
         arr.keys = key_stmts
         arr.type = array_type
 
-        new_param._expression_list = [arr]
+        new_param.set_expression_list([arr])
 
         name = copy.copy(param.get_name())
         name.parent = new_param
diff --git a/jedi/parser/representation.py b/jedi/parser/representation.py
index 534cd88c..185154d5 100644
--- a/jedi/parser/representation.py
+++ b/jedi/parser/representation.py
@@ -1159,6 +1159,10 @@ isinstance(c, (tokenize.Token, Operator)) else unicode(c)
                 result.append(tok)
         return result
 
+    def set_expression_list(self, lst):
+        """It's necessary for some "hacks" to change the expression_list."""
+        self._expression_list = lst
+
 
 class Param(Statement):
     """