temp disable Ask (will be back soon!)

app.py

@@ -112,15 +112,18 @@ if 'retriever' not in st.session_state:
 st.info("Chat with 2 milions arxiv papers, powered by [MyScale](https://myscale.com)", icon="🌟")
 st.info("We provides you metadata columns below for query. Please choose a natural expression to describe filters on those columns.\n\n" +
         "For example: \n\n" +
+        "- What is a Bayesian network? Please use articles published later than Feb 2018 and with more than 2 categories and whose title like `computer` and must have `cs.CV` in its category.\n" +
+    	"- What is neural network? Please use articles published by Geoffrey Hinton after 2018.\n" +
         "- Introduce some applications of GANs published around 2019.\n" + 
         "- 请根据 2019 年左右的文章介绍一下 GAN 的应用都有哪些？" + 
         "- Veuillez présenter les applications du GAN sur la base des articles autour de 2019 ?")
-st.info("You can retrieve papers with button `Query` or ask questions based on retrieved papers with button `Ask`.", icon='💡')
+# or ask questions based on retrieved papers with button `Ask`
+st.info("You can retrieve papers with button `Query`", icon='💡')
 st.dataframe(st.session_state.metadata_columns)
 st.text_input("Ask a question:", key='query')
 cols = st.columns([1, 1, 7])
 cols[0].button("Query", key='search')
-cols[1].button("Ask", key='ask')
+# cols[1].button("Ask", key='ask')
 plc_hldr = st.empty()
 
 if st.session_state.search: