Improve Gemma2 wrapper: avoid lists, especially "\n\n" delimited lists.

PiperOrigin-RevId: 673327325
Change-Id: I71e083105a924a1a087d3bbcd503610aade46657

concordia/components/agent/question_of_recent_memories.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-"""Agent component for self perception."""
+"""Agent component for asking questions about the agent's recent memories."""
 
 from collections.abc import Callable, Collection, Mapping
 import datetime

concordia/language_model/together_ai.py

@@ -78,8 +78,12 @@ def sample_text(
             'role': 'system',
             'content': (
                 'You always continue sentences provided '
-                + 'by the user and you never repeat what '
-                + 'the user already said.'
+                'by the user and you never repeat what '
+                'the user has already said. All responses must end with a '
+                'period. Try not to use lists, but if you must, then '
+                'always delimit list items using either '
+                r"semicolons or single newline characters ('\n'), never "
+                r"delimit list items with double carriage returns ('\n\n')."
             ),
         },
         {