Questão jurídica principal
Whether the Bundesgericht had jurisdiction over the dispute arising from a promise of pre-emption for real estate contained in a lease.
Decisão extraída
No. The agreement concerned the transfer of real property and was governed by cantonal law, so the federal court lacked jurisdiction.
Fundamentação extraída
A promise to sell land under a condition is an agreement relating to real estate transactions. Its legal nature is not changed because it appears as a conditional preliminary contract or is contained in a lease. The same law governs both specific performance and damages based on the same promise; here that law is cantonal.