1.   Lawyers say she told prosecutors that the dress contains a stain that could provide evidence of a sexual encounter with the president.

2.   Lewinsky has told Starr the dress contains a stain caused by Clinton that could prove that she engaged in a sexual relationship with the president, the source said.

3.   On one of the tapes, the investigators said, Ms. Lewinsky tells a friend, Linda Tripp, that the dress contains a semen stain from Clinton.

4.   Technicians there are trying to determine if the dress contained physical evidence of a sexual encounter with the president.

5.   They are trying to determine if the dress contained physical evidence of a sexual encounter with the president.