user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'Filmography' regarding 'Christa B. Allen'
Table Content:
| Year | Title | Role | Notes |
| --- | --- | --- | --- |
| 2006 | Medium | Maura Walker | Episode: "Blood Relation" |
| 2006 | Cake | Cake | Lead role, 13 episodes |
| 2007 | Cory in the House | Cheyenne | Episode: "The Kung Fu Kats Kid" |
| 2008 | The Suite Life on Deck | Violet Berg | Episode: "The Kidney of the Sea" |
| 2008 | Grey's Anatomy | Holly Anderson | Episode: "All by Myself" |
| 2009 | ER | Jody Nugent | Episode: "Love Is a Battlefield" |
| 2009 | CSI: Crime Scene Investigation | Matty Moore | Episode: "Miscarriage of Justice" |
| 2009 | Chasing a Dream | Nikol Schrunk | Television film |
| 2009 | Wizards of Waverly Place | Daphne | Episode: "Family Game Night" |
| 2010 | Cold Case | Annabelle Bennet | Episode: "Free Love" |
| 2011 | Deadly Sibling Rivalry | Fiona | Television film |
| 2011–15 | Revenge | Charlotte Grayson/Clarke | Main role (seasons 1–4); 70 episodes |
| 2015 | Baby Daddy | Robyn | Recurring role, 4 episodes |
| 2016 | Hopeless, Romantic | Liz | Television film |
| 2017 | Family of Lies | Emily | Television film |
| 2018 | Dangerous Seduction | Posy Pinkerton | Television film; also known as The Queen of Sin |
| 2018 | Code Black | Amber | Episode: "Only Human" |
| 2019 | When Vows Break | Ella | Television Film |


Question
Which role did Christa B. Allen play in 2015 alone?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["In 2015, Christa B. Allen had a recurring role as Robyn in Baby Daddy."]