Assertion: birch's soil | /r/HasProperty | alkaline
Facets:
value: highly
type: DEGREE
value: slightly
type: DEGREE
Source sentences:
text: Birch trees prefer a slightly acidic soil with a pH between 5.0 and 6.5, although they will tolerate neutral or slightly alkaline soil.
text: However, if your soil is highly alkaline, clay or has some other problem, use commercial potting soil.