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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _item_in_context(lines, item, context):
 """Determines if a WorkItem falls within an anchor. This only returns True if a WorkItems start-/stop-pos range is *completely* within an anchor, not just if it overalaps. """

    start_offset = _line_and_col_to_offset(lines, item.start_pos[0],
                                           item.start_pos[1])
    stop_offset = _line_and_col_to_offset(lines, item.end_pos[0],
                                          item.end_pos[1])
    width = stop_offset - start_offset

    return start_offset >= context.offset and width <= len(context.topic)