Updated app.py

app.py

@@ -16,8 +16,9 @@ st.set_page_config(page_title="Automated Question Answering System")    # set pa
 # heading 
 st.markdown("<h2 style='text-align: center;'>Question Answering on Academic Essays</h2>", unsafe_allow_html=True)   
 # description
-st.markdown("<h3 style='text-align: left; color:#F63366; font-size:18px;'><b>What is extractive question answering about?<b></h3>", unsafe_allow_html=True)     
-st.write("Extractive question answering is a Natural Language Processing task where text is provided for a model so that the model can refer to it and make predictions about where the answer to a question is.")
+st.markdown("<h3 style='text-align: left; color:#F63366; font-size:18px;'><b>What is this project about?<b></h3>", unsafe_allow_html=True)     
+st.write("The project is to develop a web-based automated question-and-answer system for academic essays using natural language processing (NLP). Users can enter the essay and ask questions about it, and the system will automatically create answers.")
+st.write("Click 'Input Text' or 'Upload File' to start experience the system. ")
 
 # store the model in cache resources to enhance efficiency (ref: https://docs.streamlit.io/library/advanced-features/caching)
 @st.cache_resource(show_spinner=True)
@@ -67,7 +68,7 @@ def extract_text(file_path):
 
 #-------------------- Main Webpage  --------------------
 # choose the source with different tabs
-tab1, tab2 = st.tabs(["Input text", "Upload File"])
+tab1, tab2 = st.tabs(["Input Text", "Upload File"])
 
 #---------- input text ----------
 # if type the text as input
@@ -81,13 +82,7 @@ with tab1:
     context = st.session_state.get("contextInput", "")
     question = st.session_state.get("questionInput", "")
 
-    # Button to try the example
-    example = st.button("Try example")
-
-    # Update the values if the "Try example" button is clicked
-    if example:
-        context = sample_text
-        question = sample_question
+    
 
     # Display the text area and text input with the updated or default values
     context = st.text_area("Enter the essay below:", value=context, key="contextInput", height=330)
@@ -95,6 +90,15 @@ with tab1:
     
     # perform question answering when "get answer" button clicked
     button = st.button("Get answer", key="textInput")
+    
+    # Button to try the example
+    example = st.button("Try with example")
+
+    # Update the values if the "Try with example" button is clicked
+    if example:
+        context = sample_text
+        question = sample_question
+        
     if button:
         if context=="" or question=="":
             st.error ("Please enter BOTH the context and the question", icon="🚨")
@@ -105,7 +109,7 @@ with tab1:
 # if upload file as input  
 with tab2:
     # provide upload place
-    uploaded_file = st.file_uploader("Choose a .txt file to upload", type=["txt","pdf"])
+    uploaded_file = st.file_uploader("Upload essay in PDF format:", type=["pdf"])
 
     # Create a session-level variable to track the uploaded file
     if 'file' not in st.session_state: