The phrase "arguably contains" is correct and usable in written English.
It can be used when you want to suggest that something can be debated or discussed regarding its inclusion or presence of certain elements.
Example: "The novel arguably contains themes of existentialism that resonate with modern readers."
Alternatives: "can be said to include" or "is said to encompass".
Il tabarro (The cloak) arguably contains some of the composer's most poised and finely wrought music.
The King of Comedy is easily the least watched film on this list, but it's the one that arguably contains De Niro's most fascinating performance.
The jacket of his next book, a collection of breathtaking essays, perfectly titled "Arguably," contains some glowing words of praise, including my own (humble but earnest) asseveration that he is — was — "the greatest living essayist in the English language".
The resulting physical view arguably contains anticipations of the fundamental character of modern physics, and certainly anticipates modern theory of homeostatic systems.
Petrified Forest National Park arguably contains the best exposed, most accessible, and most thoroughly studied terrestrial Upper Triassic deposits in the world.
This results in a document that arguably contains all the same concepts in the same order, but which should be bereft of all identifiers.
The details that have leaked out so far arguably contain something for both sides, depending on interpretation.
But they said that if someone jumped a fence with a backpack or other item that could arguably contain a bomb or other weapon, but did not clearly threaten the guard, they could not fire their guns.
Alice (1990), an extremely quiet film, received indifferent reviews, but it arguably contained Farrow's best performance in any of Allen's films as a wealthy woman who is sent down a fantasy rabbit hole by an ancient Chinese sage.
While this was the result of the work and ideas of many, the most extensive treatment in the framework is arguably contained in the 1965 work of Geymonat [3].
While many strategy games arguably contain a similar "explore, expand, exploit, exterminate" cycle, game journalists, developers and enthusiasts generally apply "4X" to a more specific class of games, and contrast 4X games with other strategy games such as Command & Conquer.
