Assertion: methylphenidate's life | /r/HasProperty | about 3 to 4 hours
Facets:
Source sentences:
text: The half-life of ritalinic acid is about 3 to 4 hours.
text: The half-life of ritalinic acid is about 3-4 hours.
text: The half-life of ritalinic acid is about 3 to 4 hours.
text: The half-life of ritalinic acid is about 3 to 4 hours.
text: The half-life of ritalinic acid is about 3-4 hours.