add qa template exact output

prepare/templates/qa/multiple_choice/templates.py

@@ -412,6 +412,21 @@
     overwrite=True,
 )
 
+add_to_catalog(
+    MultipleChoiceTemplate(
+        input_format="Answer the following multiple choice question based on the {context_type}. Answer only and exactly with one of the following: {numerals}.\nContext:\n{context}\nQuestion:\n{question}\nChoices:\n{choices}",
+        target_prefix="Answer:\n",
+        target_field="answer",
+        choices_separator="\n",
+        postprocessors=["processors.to_string_stripped"],
+        title_fields=["context_type"],
+    ),
+    "templates.qa.multiple_choice.with_context.exact_answer_instruct",
+    overwrite=True,
+)
+
+
+
 
 def remove_duplicates(input_list):
     seen = set()

src/unitxt/catalog/templates/qa/multiple_choice/with_context/exact_answer_instruct.json

@@ -0,0 +1,13 @@
+{
+    "__type__": "multiple_choice_template",
+    "input_format": "Answer the following multiple choice question based on the {context_type}. Answer only and exactly with one of the following: {numerals}.\nContext:\n{context}\nQuestion:\n{question}\nChoices:\n{choices}",
+    "target_prefix": "Answer:\n",
+    "target_field": "answer",
+    "choices_separator": "\n",
+    "postprocessors": [
+        "processors.to_string_stripped"
+    ],
+    "title_fields": [
+        "context_type"
+    ]
+}