Douglas Robert Jackson

Career overview

Task: Write a career overview of Douglas Robert Jackson (Acting).
Constraint 1: Use ONLY verifiable facts from the provided sources.
Constraint 2: Do not invent titles, names, dates, etc.
Constraint 3: Write original, neutral, encyclopedic prose in plain text.
Constraint 4: No markdown, no asterisks, no headings, no bullet points.
Constraint 5: Length must be 180-260 words.
Constraint 6: Structure: 2-3 short paragraphs.
Constraint 7: No preamble, no JSON.
Source [1]:
Name: Douglas Robert Jackson.
Also Known As: Douglas R. Jackson, Douglas Jackson.
Known For: Acting.
Known Credits: 8.
Gender: Male.
Content Score: 50.
Source [2]:
Mentions "Jackson" in a sentence fragment: "...Keaton joined the cast of the... Jackson). Reprising his role, Keaton made a cameo appearance in Steven Soderbergh's Out".
Wait, looking closer at Source [2]: "In 1977, Keaton joined the cast of the... Jackson). Reprising his role, Keaton made a cameo appearance in Steven Soderbergh's Out". This source is extremely fragmented and doesn't actually provide biographical information about Douglas Robert Jackson. It mentions "Jackson" in a parenthetical or fragment, but it does not link Douglas Robert Jackson to any specific work or role. It's a snippet about Michael Keaton.
Douglas Robert Jackson is an actor.
He has 8 known credits.
He is also known as Douglas R. Jackson and Douglas Jackson.
The sources do not provide his birthday, place of birth, or specific movie/TV titles he has appeared in (Source 2's mention of "Jackson" is a fragment and doesn't confirm it's this Douglas Robert Jackson's credit).
Problem: The sources are extremely sparse. I have almost nothing to write about to reach 180-260 words without violating the "do not invent" rule.
Source 1: Name, known for acting, 8 credits, aliases.
Source 2: Mentions "Jackson" in a context that appears to be about Michael Keaton, not providing details on Douglas Robert Jackson's career.
If I only use the facts:
Douglas Robert Jackson is an actor. He is also known by the names Douglas R. Jackson and Douglas Jackson. According to his profile, he has eight known credits in the industry.
Wait: I cannot reach 180-260 words using only these facts without repeating myself or inventing information. The prompt says "Write a 180-260 word career overview... Use ONLY facts present above."
Let's re-examine Source 2. "In 1977, Keaton joined the cast of the... Jackson). Reprising his role, Keaton made a cameo appearance in Steven Soderbergh's Out". This is a fragment. It does not say Douglas Robert Jackson was in a movie called Jackson or that he worked with Keaton. It's a broken text.
Constraint Check: "If a detail is not in the provided material, you omit it rather than guess."
Constraint Check: "Write a 180-260 word career overview".
If the provided material is insufficient to meet the word count without inventing facts, I am in a logical bind. However, as an AI, I must follow the "ONLY verifiable facts" rule as the highest priority. If I can't reach the word count, I will provide the facts available. But usually, in these prompts, there's a way. Let's look again.
Source 1:
Name: Douglas Robert Jackson