The relevant sentence in the passage is: Plastic boards are usually called PE (polyethylene) cutting boards, or HDPE (high-density polyethylene plastic), the material of which these boards are made.
HDPE ( high - density polyethylene plastic )
Plastic boards are usually called PE (polyethylene) cutting boards, or HDPE (high-density polyethylene plastic), the material of which these boards are made. There are basically two types of HDPE boards being made. One version is made from injection-molded plastic, while the other is HDPE from an extrusion line.

Based on this passage, what type of plastic are cutting boards made from?

To answer the above question, the relevant sentence is: "What the Hell Did I Say" is a song co-written and recorded by country music artist Dierks Bentley.
country music artist Dierks Bentley
Passage: "What the Hell Did I Say" is a song co-written and recorded by country music artist Dierks Bentley. It was released in June 2017 as the fourth single from his 2016 album Black. This is the second collaboration by Bentley, Kear and Tompkins, following the highly successful No. 1 single "Drunk on a Plane". However, unlike "Drunk", this song underperformed and became the lowest charting single of Bentley's career.

Question: Based on this passage, who sings what the hell did i say?

The relevant sentence in the passage is: The first speed camera was installed in 1991.
1991

The first speed camera was installed in 1991. A camera that was installed on the M40 motorway and recorded 400 instances of speeding within 40 minutes. The Association of British Drivers was formed the same year and campaigned vigorously against speed cameras.

Based on this passage, when was the first speed camera introduced in the uk?