138 In the Indian context, we would respectfully adopt the three categories in Boghara Polyfab (P) Ltd. The first category of issues, namely, whether the party has approached the appropriate High Court, whether there is an arbitration agreement and whether the party who has applied for reference is party to such agreement would be subject to more thorough examination in comparison to the second and third categories/ issues which are presumptively, save in exceptional cases, for the Arbitrator to decide. In the first category, we would add and include the question or issue relating to whether the cause of action relates to action in rem; whether the subject matter of the dispute affects third party rights, have erga omnes effect, requires centralised adjudication; whether the subject matter relates to inalienable sovereign and public interest functions of the State; and whether the subject matter of dispute is expressly or by necessary implication non-arbitrable as per mandatory statute(s). Such questions arise rarely and, when they arise, are on most occasions questions of law. On the other hand, issues relating to contract formation, existence, validity and non-arbitrability would be connected and intertwined with the issues underlying the merits of the respective disputes/claims. They would be factual and disputed and for the Arbitral Tribunal to decide.”