this program is how the python case sencitive word

cs50-python-problem-set/problem-set-1/deep.py

+# This program is for the case sencitive  how is working 
+
+usr_input = input("What is the Answer to the Great Question of Life, the Universe, and Everything?") #fectch the usr inpput 
+if usr_input == "42" or usr_input == "Forty Two" or usr_input == "forty-two":
+    print("Yess")
+else :
+    print("No")