Erdős Problem #1022 — Is there a constant ctc_t, where ct→∞c_t\to \infty as t→∞t\to \infty, such that if F\mathcal{F} is a finite family of finite sets, all of size at least tt, and for every set XX there are…

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Is there a constant ctc_t, where ct→∞c_t\to \infty as t→∞t\to \infty, such that if F\mathcal{F} is a finite family of finite sets, all of size at least tt, and for every set XX there are <ct∣X∣<c_t\lvert X\rvert many A∈FA\in \mathcal{F} with A⊆XA\subseteq X, then F\mathcal{F} has chromatic number 22 (in other words, has property B)?

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