vb.net:
Public Class QuestionChecker
Private Shared ReadOnly QUESTION_WORDS As HashSet(Of String) = New HashSet(Of String) From {
"what", "who", "where", "when", "why", "how",
"is", "are", "was", "were", "do", "does", "did",
"can", "could", "would", "will", "shall", "should"...