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:
| Number | Name | Titles | Date | Opponent | Result | Defenses |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Thomas Hearns | WBA Welterweight (147) | 1980-08-02 | Pipino Cuevas | TKO 2/15 | 3.0 |
| 1.0 | Thomas Hearns | WBC Light middleweight (154) | 1982-12-03 | Wilfred Benítez | TKO 2/15 | 3.0 |
| 1.0 | Thomas Hearns | The Ring Light middleweight (154) | 1983-05 | N/A | N/A | 5.0 |
| 1.0 | Thomas Hearns | WBC Light heavyweight (175) | 1987-03-07 | Dennis Andries | TKO 10/12 | 0.0 |
| 1.0 | Thomas Hearns | WBC Middleweight (160) | 1987-10-29 | Juan Domingo Roldán | KO 4/12 | 0.0 |
| 1.0 | Thomas Hearns | WBO Super middleweight (168) | 1988-11-04 | James Kinchen | MD 12/12 | 2.0 |
| 2.0 | Ray Charles Leonard | WBC Welterweight (147) | 1979-11-30 | Wilfred Benítez | TKO 15/15 | 1.0 |
| 2.0 | Ray Charles Leonard | The Ring Welterweight (147) | 1979-11-30 | Wilfred Benítez | TKO 15/15 | 1.0 |
| 2.0 | Ray Charles Leonard | WBA Light middleweight (154) | 1981-06-25 | Ayub Kalule | TKO 9/15 | 0.0 |
| 2.0 | Ray Charles Leonard | The Ring Junior middleweight (154) | 1981-06-25 | Ayub Kalule | TKO 9/15 | 0.0 |
| 2.0 | Ray Charles Leonard | WBC Middleweight (160) | 1987-04-06 | Marvin Hagler | SD 12/12 | 0.0 |
| 2.0 | Ray Charles Leonard | The Ring Middleweight (160) | 1987-04-06 | Marvin Hagler | SD 12/12 | 0.0 |
| 2.0 | Ray Charles Leonard | WBC Super middleweight (168) | 1988-11-07 | Don Lalonde | TKO 9/12 | 2.0 |
| 2.0 | Ray Charles Leonard | WBC Light heavyweight (175) | 1988-11-07 | Don Lalonde | TKO 9/12 | 0.0 |
| 3.0 | Oscar De La Hoya | WBO Super featherweight (130) | 1994-03-05 | Jimmy Bredahl | TKO 10/12 | 1.0 |
| 3.0 | Oscar De La Hoya | WBO Lightweight (135) | 1995-02-18 | John-John Molina | UD 12/12 | 6.0 |
| 3.0 | Oscar De La Hoya | WBC Super lightweight (140) | 1996-06-07 | Julio César Chávez | TKO 4/12 | 1.0 |
| 3.0 | Oscar De La Hoya | Lineal Super lightweight (140) | 1996-06-07 | Julio César Chávez | TKO 4/12 | 1.0 |
| 3.0 | Oscar De La Hoya | WBC Welterweight (147) | 1997-04-12 | Pernell Whitaker | UD 12/12 | 7.0 |
| 3.0 | Oscar De La Hoya | Lineal Welterweight (147) | 1997-04-12 | Pernell Whitaker | UD 12/12 | 7.0 |
| 3.0 | Oscar De La Hoya | WBC Super welterweight (154) | 2001-06-23 | Javier Castillejo | UD 12/12 | 1.0 |
| 3.0 | Oscar De La Hoya | The Ring Junior middleweight (154) | 2002-09-14 | Fernando Vargas | TKO 11/12 | 1.0 |
| 4.0 | Floyd Mayweather, Jr. | WBC Super featherweight (130) | 1998-10-03 | Genaro Hernández | RTD 8/12 | 8.0 |
| 4.0 | Floyd Mayweather, Jr. | Lineal Super featherweight (130) | 1998-10-03 | Genaro Hernández | RTD 8/12 | 8.0 |
| 4.0 | Floyd Mayweather, Jr. | WBC Lightweight (135) | 2002-04-20 | José Luis Castillo | UD 12/12 | 3.0 |
| 4.0 | Floyd Mayweather, Jr. | The Ring Lightweight (135) | 2002-04-20 | José Luis Castillo | UD 12/12 | 3.0 |
| 4.0 | Floyd Mayweather, Jr. | WBC Super lightweight (140) | 2005-06-25 | Arturo Gatti | TKO 6/12 | 0.0 |
| 4.0 | Floyd Mayweather, Jr. | IBF Welterweight (147) | 2006-04-08 | Zab Judah | UD 12/12 | 0.0 |
| 4.0 | Floyd Mayweather, Jr. | The Ring Welterweight (147) | 2006-11-04 | Carlos Baldomir | UD 12/12 | 1.0 |
| 4.0 | Floyd Mayweather, Jr. | WBC Super welterweight (154) | 2007-05-05 | Oscar De La Hoya | SD 12/12 | 0.0 |
| 5.0 | Manny Pacquiao | WBC Flyweight (112) | 1998-12-04 | Chatchai Sasakul | KO 8/12 | 1.0 |
| 5.0 | Manny Pacquiao | Lineal Flyweight (112) | 1998-12-04 | Chatchai Sasakul | KO 8/12 | 1.0 |
| 5.0 | Manny Pacquiao | IBF Super bantamweight (122) | 2001-06-23 | Lehlohonolo Ledwaba | TKO 6/12 | 4.0 |
| 5.0 | Manny Pacquiao | The Ring Featherweight (126) | 2003-11-15 | Marco Antonio Barrera | TKO 11/12 | 2.0 |
| 5.0 | Manny Pacquiao | WBC Super featherweight (130) | 2008-03-15 | Juan Manuel Márquez | SD 12/12 | 0.0 |
| 5.0 | Manny Pacquiao | The Ring Junior lightweight (130) | 2008-03-15 | Juan Manuel Márquez | SD 12/12 | 0.0 |
Question:
What titles were fought for on 1997-04-12?
Answer:
WBC Welterweight (147), Lineal Welterweight (147)