"which were held" is a perfectly correct and usable phrase in written English.
An example sentence would be: "The court hearing had been postponed multiple times, which were held in a higher court."
But, of course, the traffic increased also through the maneuvers which were held nearby.
There were six women in the finals, which were held in the evening.
He sponsored the peace negotiations which were held in Portsmouth, N. H.
Breslin did not win at the RITAs, which were held at the end of July.
Abe decided to dissolve parliament and call snap elections, which were held on December 14.
But McCarthy was ultimately brought down by the Army-McCarthy hearings, which were held from April through June of 1954.
Its only effective use was against trade unions, which were held by the courts to be illegal combinations.
Unsatisfied with his partnership with Yesh Atid and Hatnua, Netanyahu called for early elections, which were held in March 2015.
The league subsequently reorganized the Panhellenic Pythian Games, which were held in Delphi every four years beginning in 582 bce.
A 1931 statement called for a boycott of the 1932 Olympic Games, which were held in the United States.
The company's biggest recent challenge was the first European Games, which were held in Baku, Azerbaijan, in 2015.
