Anchor: Of course, growth was faster during some periods-the 1950s and 1960s, and the second half of the 1990s-and slower during other periods-the 1970s.
Entailed: Some periods have faster growth than the others.
Contradiction: Growth has continued to slow.
Contradiction: The young man is driving a tractor.
Contradiction: A couple of people are bike riding.
Contradiction: It is one of the many cities that bridges two continents. 
Contradiction: She became a woman in California.