Some examples from the web:

• The ability of catalysts to deal with this is reduced by the presence of sulphur.
• If the pH is alkali, that could indicate the presence of...
• In this context COSAC welcomed the presence of COSAP at its meeting as a special guest.
• This map shows the presence of agriculture on planet Earth.
• Our investigation has determined the presence of methicillin-resistant staphylococcus aureus USA600.
• Infrared imaging indicates the presence of four humans.
• Abby confirmed the presence of ammonium carbonate.
• Adrian Tripod senses the presence of Antoine Rouge.
• The Commission considers the presence of human rights monitors equally important.
• Another crucial condition is the presence of sufficient arbitrage possibilities for banks.
• The Commission considers the presence of human rights monitors equally important.
• But the level of quinalbarbitone in his blood suggests the presence of barbiturates.
• This color change indicates the presence of traces of sulfuric acid.
• I felt the presence of evil...
• Sir, the presence of a civilian at court-martial is highly irregular.
• Furthermore, the presence of additives in flavourings must not mislead the consumer.
• Official controls should be based on the relevant maximum limits for the presence of residues.
• Frankincense flees the presence of malevolent energy.
• Explain the presence of Miss Watts.
• I'm feeling the presence of a spirit.

Some examples from the web:

• The possibility to have a presence of tax officials in other Member States is a flexible instrument for administrative cooperation.
• Patients were excluded from the study if there was a presence of invasive oesophageal cancer, if they had a history of cancer other than non- melanoma skin cancer or if they had received prior PDT to the oesophagus.
• Patients were excluded from the study if there was a presence of invasive oesophageal cancer, if they had a history of cancer other than non- melanoma skin cancer or if they had received prior PDT to the oesophagus.
• There seems to be a presence of ammonium hydroxide in Richter's blood.
• It was really a presence of a kind of energy or quickening.
• It was like Percival said, a presence of some kind.
• In many cases the required attendance is merely a presence of a few minutes at one or two committee meetings.
• It is the spectrum of a planet like Earth, showing a presence of nitrogen dioxide, as a clear signal of life, and oxygen and ozone.
• That means there's a presence of gunshot residue on your hand.