The term interrogation point is identified in base64 scheme by the sequence aW50ZXJyb2dhdGlvbiBwb2ludA==, while the MD5 signature is equal to f5ae9ba011c4a29878a9025daf75d4e1. The ASCII encoding of interrogation point in hexadecimal notation is 696e746572726f676174696f6e20706f696e74.