<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def split_str(string):
 """Split string in half to return two strings"""

    split = string.split(' ')
    return ' '.join(split[:len(split) // 2]), ' '.join(split[len(split) // 2:])