diff --git a/tifascore/question_gen_llama2.py b/tifascore/question_gen_llama2.py
index ff2b40f..fe0cdde 100644
--- a/tifascore/question_gen_llama2.py
+++ b/tifascore/question_gen_llama2.py
@@ -56,16 +56,20 @@ def parse_resp(resp):
     for line_number in range(6, len(resp)):
         line = resp[line_number]
         if line.startswith('About '):
-            whole_line = line[len('About '):-1]
-            this_entity = whole_line.split(' (')[0]
-            this_type = whole_line.split(' (')[1].split(')')[0]
+            if '(' in line and ')' in line:
+                whole_line = line[len('About '):-1]
+                this_entity = whole_line.split(' (')[0]
+                this_type = whole_line.split(' (')[1].split(')')[0]
 
         elif line.startswith('Q: '):
-            this_question = line[3:]
+            if len(line) > 3:
+                this_question = line[3:]
         elif line.startswith('Choices: '):
-            this_choices = line[9:].split(', ')
+            if len(line) > 9  and ',' in line:
+                this_choices = line[9:].split(', ')
         elif line.startswith('A: '):
-            this_answer = line[3:]
+            if len(line) > 3:
+                this_answer = line[3:]
 
             if this_entity and this_question and this_choices:
                 question_instances.append(
diff --git a/tifascore/tifa_score.py b/tifascore/tifa_score.py
index 2109e24..da4f690 100644
--- a/tifascore/tifa_score.py
+++ b/tifascore/tifa_score.py
@@ -3,6 +3,7 @@
 from tqdm import tqdm
 from .vqa_models import VQAModel
 from statistics import mean, stdev
+import copy
 
 def tifa_score_benchmark(vqa_model_name, question_answer_path, id2img_path):
     
@@ -85,7 +86,7 @@ def tifa_score_single(vqa_model, question_answer_pairs, img_path):
         
         # read the question, choices, and answers
         if question_answer_pair['question'] not in question_logs:
-            question_logs[question_answer_pair['question']] = question_answer_pair
+            question_logs[question_answer_pair['question']] = copy.deepcopy(question_answer_pair)
         choices=question_answer_pair['choices']
             
         # get VQA answer