*Each line given consists of two strings. The program needs to print True if the first string is a substring of the second (and False otherwise).
Example
Rain Rainbow, True.
rainb Rainbow,True.
raInbO Rainbow,True.
owa,False.
and so on*

**my code works except when the letters are capitalised , eg for "raInB" it would give false**

```
import sys

for s in sys.stdin:
    tokens = s.strip().split()
    a = tokens[0]
    b = tokens[1]

    print(a in b)

```