R. Chiya the Great: (If a person sold a field) if it contained a patch measuring six by six tefachim, it is considered a separate field and is not included in the sale.

R. Yochanan: If a person buys an older sycamore within his friend's field, it is a dispute between R. Yishmael bar R. Yosi and Rabbanan...

R. Yishmael says that he acquires its land (as well) and Rabbanan say that he does not acquire it.

Question (R. Chiya bar Vava): If he sold him all of the trees except an older sycamore, is the land underneath the sycamore also sold or not?

According to R. Yishmael bei R. Yosi, the buyer acquires it; according to Rabbanan, he does not acquire it.