Anchor: i've only lived here about six years so if if if i have one it must be very very slight but the Yankees can hear it
Entailed: If I have one it is barely noticeable because I have only lived here for about 6 years. 
Contradiction: I have lived here for 20 years so it is very thick. 
Contradiction: Comprehensive Air Quality Model with Extensions has never been accessed.
Contradiction: The couple is posing for a picture.
Contradiction: the boy is in the classroom
Contradiction: There are motorcyles on the sidewalk.