code: def get_span(spans, row, column):
      
      for i in range(len(spans)):
          if [row, column] in spans[i]:
              return spans[i]
  
      return None
docs: Gets the span containing the [row, column] pair
  
      Parameters
      ----------
      spans : list of lists of lists
          A list containing spans, which are lists of [row, column] pairs
          that define where a span is inside a table.
  
      Returns
      -------
      span : list of lists
          A span containing the [row, column] pair