<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_sentences(s, pad=0):
 """ Split sentences for formatting. """

    sentences = []
    for index, sentence in enumerate(s.split('. ')):
        padding = ''
        if index > 0:
            padding = ' ' * (pad + 1)
        if sentence.endswith('.'):
            sentence = sentence[:-1]
        sentences.append('%s %s.' % (padding, sentence.strip()))
    return "\n".join(sentences)