Assertion: circumaural headphone | /r/CapableOf | make for inefficient and poor model
Facets:
value: for ease of portability
type: PURPOSE
Source sentences:
text: Because their earcups and surrounding earpads are so large (to fit completely over the person's ears), circumaural headphones can be very cumbersome to travel with and make for an inefficient and poor model for ease of portability.