Anchor: In answer to the objection that urine tests reveal only very recent use of hard drugs, Bruce Reed says that before long, drug-testing technology will have advanced from urine to hair tests, which may reveal chemical traces for up to a year.
Entailed: Hair tests to reveal drug use may reveal chemical traces for up to a year.
Contradiction: Urine tests can reveal use of drugs up to a year afterwards.
Contradiction: A man is playing with his dog at the park.
Contradiction: People are sitting on grass.
Contradiction: No thankyou.
Contradiction: Four dogs interacting in a snowy field.