Assertion: chicken coop's ventilation | /r/HasProperty | must
Facets:
Source sentences:
text: Excess moisture and excess ammonia are both health hazards, so adequate ventilation is a must.
text: While good ventilation is a must, you do have to make the coop tight enough so drafts don’t blow in on your girls.
text: While good ventilation is a must, you do have to make the coop tight enough so drafts don’t blow in on your girls.