Assertion: uracil | /r/CapableOf | differ in the presence of a methyl group
Facets:
Source sentences:
text: Thymine and uracil are similar, containing the same double bond between carbons 5 and 6 and the same two ketone groups on C-2 and C-4 of the ring, but differ only in the presence of a methyl group on the number 5 carbon of thymine.