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:
| Series # | Title | Directed by | Written by | Musical guest and song | Original air date | Production code |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | "School Ties" | Arthur W. Forney | Natalie Chaidez | Teddy Pendergrass " Close the Door " | September 8, 1994 | 70103.0 |
| 3.0 | "Sins of a Father" | Arthur W. Forney | Kevin Arkadie | The O'Jays " For the Love of Money " | September 22, 1994 | 70101.0 |
| 4.0 | "To Protect and Serve" | Frederick K. Keller | Charles D. Holland | Nancy Wilson " Love Won't Let Me Wait " | September 29, 1994 | 70106.0 |
| 5.0 | "Garbage" | Gus Trikonis | Charles D. Holland | Bobby Womack " If You Think You're Lonely Now " | October 6, 1994 | 70104.0 |
| 6.0 | "After Shakespeare" | Bill Corcoran | Nonny de la Peña & Angel Dean Lopez | Gladys Knight (as Natalie) "I Don't Want to Know" | October 13, 1994 | 70105.0 |
| 7.0 | "Tasha" | Jace Alexander | Reggie Rock Bythewood | Billy Paul " Me and Mrs. Jones " | October 27, 1994 | 70108.0 |
| 8.0 | "Missing" | Anthony Hickox | Natalie Chaidez | Stephanie Mills "What Cha Gonna Do with My Lovin'" | November 3, 1994 | 70107.0 |
| 9.0 | "The Friendly Neighborhood Dealer" | Reynaldo Villalobos | Reggie Rock Bythewood | Boyz II Men " On Bended Knee " | November 10, 1994 | 70102.0 |
| 10.0 | "Mate" | Oz Scott | Kevin Arkadie | Keith Sweat "When I Give My Love" | November 17, 1994 | 70109.0 |
| 11.0 | "Eyewitness Blues" | Frederick K. Keller | Charles D. Holland | Salli Richardson (as Tami Barrett) " Sensuality " | November 24, 1994 | 70110.0 |
| 13.0 | "Los Macheteros" | Michael Lange | Natalie Chaidez | India "Ese Hombre" | December 15, 1994 | 70111.0 |
| 14.0 | "Private Enemy No. 1" | Frederick K. Keller | Nonny de la Peña & Angel Dean Lopez | Mary J. Blige " I'm Goin' Down " | January 5, 1995 | 70113.0 |
| 16.0 | "Knock You Out" | Mike Vejar | Natalie Chaidez | Zhané " Free " | February 2, 1995 | 70116.0 |
| 18.0 | "Innocent Bystander" | Jace Alexander | Terry Curtis Fox | SWV "There'll Never Be" | February 16, 1995 | 70117.0 |
| 19.0 | "CAT" | Reynaldo Villalobos | Michael R. Perry & Stephen Gaghan | Brian McKnight "All I Do" | February 23, 1995 | 70119.0 |
| 20.0 | "All in the Family" | Jace Alexander | Charles D. Holland & Robert Ward | James Brown " It's a Man's Man's Man's World " | March 16, 1995 | 70115.0 |
| 21.0 | "Eliminate the Middleman" | Michael Scott | Natalie Chaidez | Teena Marie " Wishing on a Star " | March 30, 1995 | 70125.0 |
| 23.0 | "The Shooter" | Bill Corcoran | Charles D. Holland | Christopher Williams " Love Ballad " | April 13, 1995 | 70122.0 |
| 25.0 | "Downtown Girl" | Don Kurt | Larry Moskowitz | Jon Secada "Where Do I Go From You" | May 4, 1995 | 70129.0 |
Question:
Who were the writers for series number 20?
Answer:
Charles D. Holland & Robert Ward