The term spontaneous combustion is identified in base64 scheme by the sequence c3BvbnRhbmVvdXMgY29tYnVzdGlvbg==, while the MD5 signature is equal to 9d04d6abce4b2a5990f60835c313a0ee. The ASCII encoding of spontaneous combustion in hexadecimal notation is 73706f6e74616e656f757320636f6d62757374696f6e.