Take the following as truth: Keep an eye out for other outlets marked by small signs in doorways, including Bordados Oliveira (Rua Murcas; Tel. 291/229 340) and Madeira Supurbia (Rua do Carmo, 27; Tel. 291/224 023).
Then the following statement: "All of the outlets have a six-foot tall sign standing above them." is true, false, or inconclusive?