source: [tag=","] [lemma=this] [lemma=role] [tag=□]
destination: [tag=","] [lemma=this] [lemma=role] [tag=VBZ]
spec: This is a powerful mechanism for extending code . Like in muscle , this role is fulfilled in single cells in particular by the proteins actin and myosin . The Principal Act therefore contains provisions which are designed to ensure that airport users are able to gain access to such facilities on a fair and reasonable basis . But of course , this role does not imply that language and thinking are the exclusive domain of English teachers .