Does the sentence "The typical duration of relationships increases throughout the teenage years as well." provide a valid answer to the question "Does the typical duration of relationships increase or decrease throughout the teenage years?"

A: yes

Does the sentence "In 1925, the United Church of Canada was formed by the majority of Presbyterians combining with the Methodist Church, Canada, and the Congregational Union of Canada." provide a valid answer to the question "When was the Presbyterian Church in Canada formed?"

A: no

Does the sentence "The Khazars dominated the Black Sea steppe during the 8th century, trading and frequently allying with the Byzantine Empire against Persians and Arabs." provide a valid answer to the question "Who were allies with the Khazars?"

A: yes

Does the sentence "Most of the country's network is standard gauge (1,565 km), while the country also has 983 km of narrow gauge." provide a valid answer to the question "Who is TrainOSE a subsidiary of?"

A:
no