如何向matplotlib-venn.venn3图添加第四个与所有其他圆无关的圆

import matplotlib.pyplot as plt
from matplotlib_venn import venn3

set1 = set([1, 2, 3, 4, 5])
set2 = set([4, 5, 6, 7, 8])
set3 = set([5, 6, 7, 8, 9])

venn_diagram = venn3([set1, set2, set3], set_labels=('Set 1', 'Set 2', 'Set 3'))

venn_diagram.get_patch_by_id('100').set_alpha(0.5)  # 设置第一个圆的透明度
venn_diagram.get_patch_by_id('100').set_color('red')  # 设置第一个圆的颜色
venn_diagram.get_label_by_id('100').set_text('Set 4')  # 设置第一个圆的标签

plt.show()