This is the 9412th most frequent Turkish word.
ablası
"Her older sister."
In this sentence, 'ablası' refers to Ali's 'elder sister', indicating possession.
Ali'nin ablası çok çalışkan bir insan.
Ali's elder sister is a very hardworking person.
Here, 'ablası' refers to 'her elder sister', denoting possession by the subject of the sentence.
Şehirdeki en iyi avukatlardan biri ablası.
One of the best lawyers in the city is her elder sister.
In this sentence, 'ablası' denotes 'elder sister' with possession implied by 'komşusunun' (the neighbor's).