Given the task definition and input, reply with output. In this task, you're given a pair of sentences, sentence 1 and sentence 2. Your job is to determine if the two sentences clearly agree/disagree with each other, or if this can't be determined. Indicate your answer as yes or no respectively.

Sentence 1: When Fernando died without an heir, the Spanish claimed the throne through a web of intermarriages between the two royal houses. Sentence 2: Fernando actually had a child but no one was told of that child's existence.
no