Questão jurídica principal
Whether the tax-assumption clause formed part of the sale price under the 1991 agreement
Decisão extraída
The tax-assumption undertaking was an accessory obligation and not part of the purchase price.
Fundamentação extraída
The cantonal court’s factual finding on the parties’ true intent bound the Federal Court; alternatively, the wording and context did not support an obligation to pay a theoretical tax amount immediately.