ものと思われる（Clause + ものと思われる）— it is thought that; it is believed that

[It is thought that; it is believed that (conjecture)]

Connection: Plain form + ものと思われる

Usage: A formal expression used to state an objective conjecture or widely held belief. Common in academic papers, news reports, and official analyses. The passive form 思われる adds objectivity.

Variations:

ものと思われる (standard): 原因は人為的なものと思われる (The cause is thought to be man-made)
ものと考えられる (emphasizes reasoning): 効果があるものと考えられる (It is considered to be effective)
ものと見られる (emphasizes observation): 犯人は逃走したものと見られる (The suspect is believed to have fled)

Examples:

この遺跡は約3000年前のものと思われる。(These ruins are thought to be from about 3000 years ago.)

事故の原因は整備不良によるものと思われる。(The cause of the accident is believed to be due to poor maintenance.)

今後も需要は増加するものと思われる。(Demand is expected to continue increasing going forward.)