Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Elector | Place of birth | Cardinalatial title | Elevated | Elevator |
| --- | --- | --- | --- | --- |
| Hugh Aycelin , O.P. | Billom , France | Bishop of Ostia e Velletri | May 16, 1288 | Nicholas IV |
| Gerardo Bianchi | Parma | Bishop of Sabina | March 12, 1278 | Nicholas III |
| Giovanni Boccamazza | Rome | Bishop of Frascati | December 22, 1285 | Honorius IV |
| Matteo d'Acquasparta , O.F.M. | Acquasparta | Bishop of Porto e Santa Rufina | May 16, 1288 | Nicholas IV |
| Simon de Beaulieu | Beaulieu [ disambiguation needed ], France | Bishop of Palestrina | September 18, 1294 | Celestine V |
| Bérard de Got | Villandrout , France | Bishop of Albano | September 18, 1294 | Celestine V |
| Benedetto Caetani | Anagni | Priest of SS. Silvestro e Martino | April 12, 1281 | Nicholas III |
| Pietro Peregrosso | Milan | Priest of S. Marco | May 16, 1288 | Nicholas IV |
| Tommaso d'Ocra , O.Cel. | Ocre , Abruzzi | Priest of S. Cecilia | September 18, 1294 | Celestine V |
| Jean Lemoine | Crécy , France | Priest of SS. Marcellino e Pietro | September 18, 1294 | Celestine V |
| Pietro d'Aquila , O.S.B.Cas. | L'Aquila | Priest of S. Croce in Gerusalemme | September 18, 1294 | Celestine V |
| Guillaume Ferrières | Provence | Priest of S. Clemente | September 18, 1294 | Celestine V |
| Nicolas l'Aide | Nonancourt , France | Priest of S. Marcello | September 18, 1294 | Celestine V |
| Robert de Pontigny , O.Cist. | France | Priest of S. Pudenziana | September 18, 1294 | Celestine V |
| Simon de Armentières , O.S.B.Clun. | France | Priest of S. Balbina | September 18, 1294 | Celestine V |
| Giovanni Castrocoeli , O.S.B.Cas. | Castrocielo | Priest of S. Vitale | September 18, 1294 (or October 1294) | Celestine V |
| Matteo Orsini Rosso | Rome | Deacon of S. Maria in Portico | May 22, 1262 | Urban IV |
| Giacomo Colonna | Rome | Deacon of S. Maria in Via Lata | March 12, 1278 | Nicholas III |
| Napoleone Orsini Frangipani | Rome | Deacon of S. Adriano | May 16, 1288 | Nicholas IV |
| Pietro Colonna | Rome | Deacon of S. Eustachio | May 16, 1288 | Nicholas IV |
| Landolfo Brancaccio | Naples | Deacon of S. Angelo in Pescheria | September 18, 1294 | Celestine V |
| Guglielmo de Longhi | Bergamo | Deacon of S. Nicola in Carcere | September 18, 1294 | Celestine V |
Question:
What is the elevator when the elector is Pietro Colonna?
Answer:
Nicholas IV