This is the 10690th most frequent Turkish word.
cümlelerdir
"Are sentences."
Here, 'cümlelerdir' is used as the main subject, indicating that the text consists of sentences.
Bu metin farklı konularda yazılmış cümlelerdir.
This text consists of sentences written on different topics.
In this usage, 'cümlelerdir' describes the essence of scientific progress being based on valuable sentences.
Bilimin ilerlemesi bilim adamlarının yazdığı değerli cümlelerdir.
The progress of science is the valuable sentences written by scientists.
'Cümlelerdir' emphasizes the role of sentences in adding meaning to literary works.