The part of the sentence "which is a testimony" is correct and is used in everyday written English.
For example, "She shared her story, which is a testimony to her courage and strength."
Lok's YouTube channel has nearly 1.2 million subscribers, which is a testimony to the value he offers in every single video.
It fills a large room nicely with a big bass, which is a testimony to the speakers' quality, as there is no separate sub-woofer to enhance the bass.
You have certainly heard the example that if you only say 50percentt of 'La elaha elllalah' [There is no God but God] which is a testimony to the unity of God, it is considered blasphemy.
Now for the performances, which are a testimony to phenomenal strength in depth and to the accuracy and inconspicuousness of Simon Langton's direction.
Plushenko, who has dominated the sport all season, still beat Goebel in all three, which was a testimony to the Russian's reputation with the judges and to his ability to grit his teeth.
It looks as if he will get past Ian, and in fewer Test matches, which is a tremendous testimony to him".
The other party's lawyer might ask you to give a deposition, which is an oral testimony given before any trial.
He will be performing a piece adapted by Tanika Gupta, which is a compilation of three different testimonies which deal with the children's relationship with their mothers.
Author Wendy Pearlman presents her book, We Crossed a Bridge and it Trembled: Voices from Syria, which is an astonishing collection of intimate wartime testimonies and poetic fragments from a cross-section of Syrians whose lives have been transformed by revolution, war, and flight.
At the launch of Goma's birthday celebrations, much was made by the gallery director, Chris Saines, and by the Queensland premier and arts minister, Annastacia Palaszczuk, of the gallery's 2017 program, the headline event of which is also a testimony to the status of art in culture today: an exhibition of costumes, props and other ephemera from the Marvel Cinematic Universe.
"Wes Anderson is one of the rising powers of American cinema, to which he brings a highly personal touch, particularly in Moonrise Kingdom, which once again is a testimony to the creative freedom in which he continues to evolve," said Thierry Frémaux, Cannes' artistic director.
