import re
texts = ["Examination(s):\r\nMathematics 2nd Paper\r\n\r\nTimeTable",
"Examination(s):\r\nMathematics 2nd Paper\r\nblahblah",
"Examination(s):\r\nMathematics 2nd Paper\r\n\r\n\r\nmarks"]
for text in texts:
m = re.search(r'Examination\(s\):\s*([^\r\n]+)', text)
print(f'--- {repr(text)} ---')
if m:
print(m.group(1))
aW1wb3J0IHJlCnRleHRzID0gWyJFeGFtaW5hdGlvbihzKTpcclxuTWF0aGVtYXRpY3MgMm5kIFBhcGVyXHJcblxyXG5UaW1lVGFibGUiLAogICAgIkV4YW1pbmF0aW9uKHMpOlxyXG5NYXRoZW1hdGljcyAybmQgUGFwZXJcclxuYmxhaGJsYWgiLAogICAgIkV4YW1pbmF0aW9uKHMpOlxyXG5NYXRoZW1hdGljcyAybmQgUGFwZXJcclxuXHJcblxyXG5tYXJrcyJdCiAKZm9yIHRleHQgaW4gdGV4dHM6CgltID0gcmUuc2VhcmNoKHInRXhhbWluYXRpb25cKHNcKTpccyooW15cclxuXSspJywgdGV4dCkKCXByaW50KGYnLS0tIHtyZXByKHRleHQpfSAtLS0nKQoJaWYgbToKCQlwcmludChtLmdyb3VwKDEpKQ==