[Hints] Material should be "Passive Structure"
<p>The name of Material should be a noun. Pieces of Material may be composed of other pieces of Material.</p>
<h2>Category:</h2>
- <p>Physical. Behavioural.</p>
+ <p>Physical. Passive Structure.</p>
<h2>Examples:</h2>
<p>Plastic Case, Internal Antenna, Speedometer.</p>
