"The man is in a white shirt." is a less detailed account of " A man in a short-sleeved white shirt is standing beside a man in a long0sleeved white shirt with the sleeves rolled up"


Context: "A man in a short-sleeved white shirt is standing beside a man in a long-sleeved white shirt with the sleeves rolled up." Claim: "The man is in a white shirt."
Considering the context, is the claim true, false, or unknown?