Premise: Source: IPhone 4S
It debuted with iOS 5 , the fifth major version of iOS , Apple 's mobile operating system , that introduced features including iCloud , iMessage , Notification Center , Reminders , and Twitter integration .
Hypothesis: The IPhone 4 is a mobile personal computer developed in 2002.
Label: nei
Span interactions:
level: high
labels: Synonym
premise_text: IPhone
hypothesis_text: The IPhone
level: high
labels: Synonym
premise_text: IPhone 4S
hypothesis_text: The IPhone 4