将提供的段落排序成逻辑顺序，并编写一个短段落总结其中包含的最重要的信息。
* Sally opened the box and took out the letter.
    * She read the letter and started crying.
    * In the letter, her long-lost sister revealed that she had been searching for Sally for years.
    * The letter included a phone number and a request to call her sister as soon as possible.
1) Sally opened the box and took out the letter.
2) She read the letter and started crying.
3) In the letter, her long-lost sister revealed that she had been searching for Sally for years.
4) The letter included a phone number and a request to call her sister as soon as possible.

Summary: Sally receives a letter from her long-lost sister, who reveals that she has been looking for Sally for years. The letter includes a phone number and a request to call her sister as soon as possible. Sally reads the letter and starts crying.