A (transportation service) may pertain-to transporter.Logical formLearned from2 sentences. Transporter may provide shippers.Logical formLearned from2 sentences. (Transporter quantities) can be constituted-of-or-filled-with gas.Logical formLearned from2 sentences. Shippers may submit a pda to transporter.Logical formLearned from2 sentences. Transporter can be applicable to interconnection.Logical formLearned from2 sentences. Receipt can be from transporter.Logical formLearned from2 sentences. Transporter may apply a (discount factor) to some bids.Logical formLearned from2 sentences. A bid may be accepted by transporter.Logical formLearned from2 sentences. Obligations can be to transporter.Logical formLearned from2 sentences. A bid may be treated by transporter.Logical formLearned from2 sentences. Transporter may terminate service to a shipper.Logical formLearned from2 sentences. Transporter may offer services on a basis.Logical formLearned from2 sentences. A (notification information) may be set_forthed in a section to transporter.Logical formLearned from2 sentences. A (nomination deadline) may pertain-to transporter.Logical formLearned from2 sentences. Transporter may apply a payment.Logical formLearned from2 sentences.