System.out.println("parser tree: " + parser);
String parsing = parser;
try {
if(db == null){
At = new Attach(parsing);
st = new Stopword();
hs = st.getStopWord();
db = new Database("đại học công nghệ");
}
String ambiguity = MarkCorrection.IdentifyColumn(amb);
outputString = Process(parsing, inputQuestion, chunk, ambiguity);