如何提取第一个单词以大写字母开头、最后一个符号在点(.)之前的文本？

import re

def extract_text(text):
    # 提取第一个单词以大写字母开头的文本
    match = re.search(r'\b[A-Z][a-zA-Z]*\b', text)
    first_word = match.group(0) if match else ""

    # 提取最后一个符号在点(.)之前的文本
    match = re.search(r'[^.]*', text[::-1])
    last_text = match.group(0)[::-1] if match else ""

    return first_word, last_text

text = "Hello, world. This is a sample text."
first_word, last_text = extract_text(text)
print("First Word:", first_word)
print("Last Text:", last_text)

First Word: Hello
Last Text: This is a sample text