Participles in non-finite relative clauses

The present participle in a non-finite relative clause can occur if the preceding noun is the subject of the participle. Present participle clauses correspond to finite relative clauses in the active voice:

Who is the girl sitting next to you in class? (Who is the girl that sits next to you in class?) (defining relative clause)

Bill, waiting outside in the rain, was getting more and more annoyed. (Bill, who was waiting outside in the rain, was getting more and more annoyed.) (non-defining relative clause)

The past participle in a non-finite relative clause can occur if the preceding noun is the object of the participle. Past participle clauses correspond to finite relative clauses in the passive voice:

Martina was the only one not informed about the room change. (Martina was the only one who was not informed / who had not been informed about the room change.) (defining relative clause)

Romeo and Juliet, first published in 1597, has become one of Shakespeare's most popular plays. (Romeo and Juliet, which was first published in 1597, has become one of Shakespeare's most popular plays.) (non-defining relative clause)