Suppose a group of friends decided to go camping for the weekend. They packed their tents, sleeping bags, and food supplies before heading out to the national park. Once they arrived at the campsite, they realized they forgot to bring matches to start a campfire. After searching through their belongings, they found a lighter and were able to start a fire for the night.
Can we infer that "The friends were unable to start a campfire at all."? Yes, no, or maybe?