fixs issue

app.py

@@ -53,14 +53,17 @@ def main():
 		"'' ADAPTOGENS : Herbs for Strength , Stamina , and Stress Relief , '' Healing Arts Press , 2007 - contains a detailed monograph on Schisandra chinensis as well as highlights health benefits ."
 	]
 	example = examples[random.randint(0, len(examples)-1)]
-	while change_example:
+	previous_example = example
+	while change_example or example==previous_example:
 		example = examples[random.randint(0, len(examples)-1)]
+		change_example=False
+	previous_example = example
 	input_complex_sentence = st.text_area("Please type a Complex Sentence to split",example)
 
 	if st.button('Split✂️'):
 		with st.spinner("Spliting Sentence...🧠"):
 			generated_sentence = load_model(input_complex_sentence, model)
-		sentence1, sentence2 = tuple(generated_sentence.split("."))
+		sentence1, sentence2 = generated_sentence.split(".")
 		st.write("**Sentence1:** "+sentence1+".")
 		st.write("**Sentence2:** "+sentence2)