Update app.py

app.py

@@ -71,9 +71,9 @@ if option == "Text":
     full_text_input = st.text_area("Enter Full Text:")
     affiliations_input = st.text_area("Enter Affiliations:")
     keywords_input = st.text_area("Enter Keywords:")
-    options=["Select WoS Category", "Nursing", "Physics", "Maths", "Chemical", "Nuclear", "Engineering" ,"Other"]
+    options=["Nursing", "Physics", "Maths", "Chemical", "Nuclear", "Engineering" ,"Other"]
     
-    selected_category = st.selectbox("Select WoS categories:", options, index= 0)
+    selected_category = st.selectbox("Select WoS categories:", options, index= None)
     if selected_category == "Other":
         custom_category = st.text_input("Enter custom category:")
         selected_category = custom_category if custom_category else "Other"