Assertion: telescope's mount | /r/HasProperty | affixed to permanent pier
Facets:
Source sentences:
text: There is a trade-off to having the "best possible mount," which would be affixed to a permanent pier sunk into several cubic yards of concrete in an observatory.
text: There is a trade-off to having the "best possible mount," which would be affixed to a permanent pier sunk into several cubic yards of concrete in an observatory.