In 1973, the United States and Communist China agreed to establish liaison offices in Beijing and Washington.
In the year prior to 1974, the United States and Communist China agreed.
( z1 agree :ARG0 ( z2 country :name ( z3 name :op "United" :op "States" ) ) :ARG2 ( z4 country :name ( z5 name :op "China" ) :mod ( z6 political-movement :name ( z7 name :op "communism" ) ) ) :time ( z8 prior :op ( z9 date-entity :year 1974 ) ) )