As time passed, technology developed more efficient tools and methods to cut trees, and the use of chainsaws for that purpose began to decline.
(time; passed; ) (technology; developed; more efficient tools and methods to cut trees; T:As time passed) (the use of chainsaws for that purpose; began; ) (the use of chainsaws for that purpose; to decline; )
time technology the use of chainsaws for that purpose the use of chainsaws for that purpose
passed developed began to decline
more efficient tools and methods to cut trees T:As time passed