Database: language_corpus
Question: What is the title of the page on which the word "grec" has an occurrence of 52 times.
SQL: SELECT T3.title FROM words AS T1 INNER JOIN pages_words AS T2 ON T1.wid = T2.wid INNER JOIN pages AS T3 ON T2.pid = T3.pid WHERE T1.word = 'grec' AND T2.occurrences = 52